Type: gas pressure regulator.

The RDG-80 regulator is intended for installation in gas control points of gas distribution systems of urban and rural gas supply systems settlements, in hydraulic fracturing and gas control units of industrial and municipal enterprises.

The RDG-80 gas regulator provides a reduction in gas inlet pressure and automatically maintains a given outlet pressure regardless of changes in gas flow and inlet pressure.

The gas regulator RDG-80 as part of gas control points for hydraulic fracturing is used in gas supply systems for industrial, agricultural and municipal facilities.

The operating conditions of the regulators must correspond to the climatic version U2 of GOST 15150-69 with the ambient temperature:

From minus 45 to plus 40 °C in the manufacture of body parts from aluminum alloys;

From minus 15 to plus 40 °C in the manufacture of body parts from gray cast iron.

Stable operation of the regulator under given temperature conditions is ensured by the design of the regulator.

For normal operation or negative temperatures environment it is necessary that the relative humidity of the gas when it passes through the regulator valves is less than 1, i.e. when the loss of moisture from the gas in the form of condensate is excluded.

The warranty period is 12 months.

Service life - up to 15 years.

Basic specifications regulator RDG-80

Connection to the pipeline: flange according to GOST-12820.

Regulator operating conditions: U2 GOST 15150-69.

Ambient temperature: from minus 45 °C to plus 60 °C.

Regulator weight: no more than 60 kg.

Unevenness of regulation: no more than +- 10%.

Size parameter name	RDG-80N	RDG-80V
Nominal diameter of the inlet flange, DN, mm
Maximum input pressure, MPa (kgf/cm2)	1,2 (12)
Output pressure setting range, MPa	0,001-0,06	0,06-0,6
Seat diameter, mm	65; 70/24*
Range of adjustment of the response pressure of the automatic shutdown device RDG-N when the outlet pressure decreases, MPa	0,0003-0,003
Range of adjustment of the response pressure of the automatic shutdown device RDG-N when the outlet pressure increases, MPa	0,003-0,07
Range of adjustment of the response pressure of the automatic shutdown device RDG-V when the outlet pressure decreases, MPa	0,01-0,03
Range of adjustment of the response pressure of the automatic shutdown device RDG-V when the outlet pressure increases, MPa	0,07-0,7
Connecting dimensions of the inlet pipe, mm	80 GOST 12820-80
Connecting dimensions of the outlet pipe, mm	80 GOST 12820-80

* - Regulator DN 80 V standard Available with single saddle, double saddle on request.

Design of the gas pressure regulator RDG-80 and principle of operation

The RDG-80N and RDG-80V regulators include the following main assembly units:

Actuator;
- control regulator;
- control mechanism;
- stabilizer (for RDG-N).

1. control regulator; 2. control mechanism; 3. body; 4. shut-off valve; 5. valve working; 6. non-adjustable throttle; 7. saddle; 8. adjustable throttle; 9. working membrane; 10. rod actuator; 11. impulse tube; 12. control mechanism rod.

regulator RDG-80V composition

1. control regulator; 2. control mechanism; 3. body; 4. shut-off valve; 5. valve working; 6. non-adjustable throttle; 7. saddle; 8. adjustable throttle; 9. working membrane; 10. actuator rod; 11. impulse tube; 12. control mechanism rod; 13. stabilizer.

regulator RDG-80N composition

The actuator has a flanged body, inside of which a replaceable seat is installed. A membrane drive is attached to the lower part of the housing, which consists of a membrane, into the central socket of which a pusher rests, and into it - a rod that moves in the bushings of the guide column and transmits vertical movement membranes to the control valve.

The control regulator generates control pressure for the sub-membrane cavity of the membrane drive of the actuator in order to move the control valve.

By using adjusting glass control regulator, the RDG-80 pressure regulator is adjusted to the specified outlet pressure.

The stabilizer is designed to maintain constant pressure at the inlet to the control regulator (pilot), i.e. to eliminate the influence of input pressure fluctuations on the operation of the regulator as a whole and is installed only on low output pressure regulators RDG-N.

The stabilizer and control regulator (pilot) consist of: a housing, a membrane assembly with a spring load, a working valve, and an adjustment cup.

To control the pressure, an indicator pressure gauge is installed after the stabilizer.

The control mechanism is designed to continuously monitor the output pressure and issue a signal to activate the shut-off valve in the actuator in the event of an emergency increase or decrease in the output pressure above the permissible set values.

The control mechanism consists of a detachable housing, a membrane, a rod, a large and small adjustment spring, which balance the action of the output pressure pulse on the membrane.

The shut-off valve has bypass valve, which serves to equalize the pressure in the cavities of the actuator housing before and after the shut-off valve when starting the regulator.

The filter is designed to clean the gas used to control the regulator from mechanical impurities.

The RGD-80 regulator operates as follows. The inlet pressure gas flows through the filter to the stabilizer, then under a pressure of 0.2 MPa into the control regulator (pilot) (for the RDG-N version). Text copied from www.site. From the control regulator (for the RDG-N version), gas flows through an adjustable throttle into the submembrane cavity of the actuator. The above-membrane cavity of the actuator is connected to the gas pipeline behind the regulator through an adjustable throttle and a pulse tube of the inlet gas pipeline.

The pressure in the submembrane cavity of the actuator during operation will always be greater than the output pressure. The supra-membrane cavity of the actuator is under the influence of output pressure. The control regulator (pilot) maintains a constant pressure, so the pressure in the submembrane cavity will also be constant (in steady state).

Any deviation of the output pressure from the set one causes changes in the pressure in the above-membrane cavity of the actuator, which leads to the movement of the control valve to a new equilibrium state corresponding to the new values of the input pressure and flow rate, while the output pressure is restored.

In the absence of gas flow, the valve is closed, which is determined by the absence of a control pressure difference in the above-membrane and sub-membrane cavities of the actuator and the action of the inlet pressure.

If there is a minimum gas consumption, a control difference is formed in the above-membrane and sub-membrane cavities of the actuator, as a result of which the membrane of the actuator with a rod connected to it, at the end of which the working valve sits freely, will move and open the passage of gas through the gap formed between the valve seal and saddle

With a further increase in gas flow, under the influence of the control pressure difference in the above-mentioned cavities of the actuator, the membrane will come into further movement and the rod with the working valve will begin to increase the passage of gas through the increasing gap between the working valve seal and the seat.

When the gas flow rate decreases, the valve, under the influence of a changed control differential pressure in the cavities of the actuator, will reduce the passage of gas through the decreasing gap between the valve seal and the seat, and in the absence of gas flow, the valve will close the seat.

In the event of emergency increases and decreases in the output pressure, the membrane of the control mechanism moves to the left or right, the rod of the control mechanism disengages from the stop through the bracket and releases the levers associated with the shut-off valve rod. The shut-off valve, under the action of a spring, blocks the gas inlet into the regulator.

Throughput of regulators RDG-80N and RDG-80V Q m 3 /h saddle 65 mm, p = 0.72 kg/m 3

Pvx, MPa	Rout, kPa
Pvx, MPa	2…10	30	50	60	80	100	150	200	300	400	500	600
0,10	2250	2200	1850	1400
0,15	2800	2800	2800	2750	2600	2350
0,20	3400	3400	3400	3400	3350	3250	2600
0,25	3950	3950	3950	3950	3950	3950	3650	2850
0,30	4500	4500	4500	4500	4500	4500	4450	4000
0,40	5600	5600	5600	5600	5600	5600	5600	5600	4650
0,50	6750	6750	6750	6750	6750	6750	6750	6750	6500	5250
0,60	7850	7850	7850	7850	7850	7850	7850	7850	7850	7300	5750
0,70	9000	9000	9000	9000	9000	9000	9000	9000	9000	8850	8050	6200
0,80	10100	10100	10100	10100	10100	10100	10100	10100	10100	10100	9750	8700
0,90	11200	11200	11200	11200	11200	11200	11200	11200	11200	11200	11150	10550
1,00	12350	12350	12350	12350	12350	12350	12350	12350	12350	12350	12350	12100
1,10	13450	13450	13450	13450	13450	13450	13450	13450	13450	13450	13450	13400
1,20	14600	14600	14600	14600	14600	14600	14600	14600	14600	14600	14600	14600

dimensions gas pressure regulator RDG-80

Regulator brand	Length, mm	Construction length, mm	Width, mm	Height, mm
RDG-80N	670	502	560	460
RDG-80V	670	502	560	460

Operation of the RDG-80 regulator

The RDG-80 regulator must be installed on gas pipelines with pressures corresponding to its technical characteristics.

Installation and switching on of regulators must be carried out by a specialized construction, installation and operational organization in accordance with the approved project, technical specifications for construction and installation work, the requirements of SNiP 42-01-2002 and GOST 54983-2012 “Gas distribution systems. Gas distribution networks natural gas. General requirements for use. Operational documentation".

Elimination of defects when inspecting regulators must be carried out without pressure.

During the test, the increase and decrease in pressure should be carried out smoothly.

Preparation for installation. Unpack the regulator. Check the completeness of the delivery.

Remove grease from the surfaces of the regulator parts and wipe them with gasoline.

Check the RDG-80 regulator by external inspection for absence mechanical damage and safety of seals.

Placement and installation.

The RDG-80 regulator is mounted on a horizontal section of the gas pipeline with the membrane chamber facing down. The connection of the regulator to the gas pipeline is flanged in accordance with GOST 12820-80.

The distance from the bottom cover of the membrane chamber to the floor and the gap between the chamber and the wall when installing the regulator in the gas distribution unit and gas distribution unit must be at least 300 mm.

The impulse pipeline connecting the pipeline to the sampling point must have a diameter of DN 25, 32. The connection point of the impulse pipeline must be located on top of the gas pipeline and at a distance from the regulator of at least ten diameters of the outlet pipe of the gas pipeline.

Local narrowing of the flow area of the impulse pipe is not allowed.

The tightness of the actuator, stabilizer 13, control regulator 21, control mechanism 2 is checked by starting the regulator. In this case, the maximum input and output pressure for a given regulator is set, and the tightness is checked using a soap emulsion. Pressure testing of the regulator with a pressure value higher than that specified in the passport is unacceptable.

Operating procedure.

A technical pressure gauge TM 1.6 MPa 1.5 is installed in front of the RDG-80 regulator to measure the inlet pressure.

On the outlet gas pipeline, near the insertion point of the impulse tube, a two-pipe pressure and vacuum gauge MV-6000 or a pressure gauge is installed when operating at low pressures, as well as a technical pressure gauge TM-0.1 MPa - 1.5 when operating at medium gas pressure.

When the RDG-80 regulator is put into operation, control regulator 1 is adjusted to the value of the given output pressure of the regulator, reconfiguration of the regulator from one output pressure to another is also carried out by control regulator 11, while by screwing in the adjusting cup of the control regulator diaphragm spring, we increase the pressure, and turning away - lowering.

When self-oscillations appear in the operation of the regulator, they are eliminated by adjusting the throttle. Before putting the regulator into operation, it is necessary to open the bypass valve using the shut-off device lever; arm automatic shutdown devices; the bypass valve will close automatically. If necessary, reconfigure the upper and lower limit The response pressure of the shut-off valve is produced by the large and small adjusting nuts, respectively; by tightening the adjusting nut, we increase the response pressure, and by unscrewing it, we lower it.

Maintenance. The RDG-80V and RDG-80N regulators are subject to periodic inspection and repair. Text copied from www.site. The period of repairs and inspections is determined by the schedule approved by the responsible person.

Technical inspection of the actuator. To inspect the control valve, it is necessary to unscrew top cover, remove the valve with the stem and clean them. The valve seat and guide bushings should be thoroughly wiped.

If there are nicks and deep scratches the seat should be replaced. The valve stem must move freely in the column bushings. To inspect the membrane, you must remove the bottom cover. The membrane must be inspected and wiped. It is necessary to unscrew the throttle needle, blow it out and wipe it.

Inspection of the stabilizer 13. To inspect the stabilizer, it is necessary to unscrew the top cover, remove the membrane assembly and valve. The membrane and valve must be wiped. When inspecting and assembling the membrane, the sealing surfaces of the flanges should be wiped. Inspection of the control regulator is carried out similarly to inspection of stabilizer 13.

Inspection of the control mechanism. Unscrew the adjusting nuts, remove the springs and the top cover. Inspect and wipe the membrane. Make sure the valve seal is intact. If necessary, replace the membrane. Wipe the sealing surfaces of the housing and cover.

Possible malfunctions of the RDG-80 regulator and methods for eliminating them

Name of the malfunction, external manifestation and additional signs	Probable Causes	Elimination method
The shut-off valve does not provide a tight seal.	Breakage of the shut-off valve spring. Rupture of the shut-off valve seal by the gas flow. Worn seal or damaged shut-off valve.	Replace faulty parts.
The shut-off valve does not operate consistently. Cannot be adjusted.	Breakage of the large spring of the control mechanism.
The shut-off valve does not operate when the outlet pressure drops.	Failure of the small spring control mechanism.	Replace the spring, adjust the control mechanism.
The shut-off valve does not operate during emergency increases and decreases in output pressure.	Rupture of the control mechanism membrane.	Replace the membrane, adjust the control mechanism.
As the outlet pressure increases (decreases), the outlet pressure sharply increases (decreases).	Rupture of the actuator membrane. Wear of sealing gaskets of control valves. Rupture of the stabilizer membrane. Rupture of the control regulator membrane.	Replace faulty membranes, gaskets, seat.

Manufacturer: EPO Signal LLC

The design is made in a combined design with a built-in safety valve. The operating conditions of the regulators must comply with climatic design UHL 2 according to GOST 15150-69 for operation at ambient temperatures from -40 ˚С to + 60 ˚С.

Design and principle of operation

The regulator is manufactured in 2 versions:

with outlet low pressure (N);
with output high pressure (B).

Gas pressure regulators RDG-N, RDG-V include: actuator 2, control regulator 9 (hereinafter referred to as pilot), control mechanism 17, chokes 10, 19 in accordance with Fig. 4.20. Actuator 2 (see Fig. 4.20) automatically, with the help of pilot 9, maintains the specified output pressure in all gas flow modes by changing the gap between valve 4 and seat 3.

The actuator 2 consists of a housing with a seat 3, a membrane with a rigid center 6, sandwiched along the perimeter between the upper and lower covers; the rigid center, through the pusher and rod 5, transmits the movement of the membrane to valve 4, thereby changing the flow and output pressure of the regulator.

Rice. 4.20. Diagram of the gas pressure regulator RDG-N (RDG-V): 1 - shut-off valve; 2 - actuator; 3 - saddle; 4 - working valve; 5 - rod; 6 — membrane of the actuator; 7 — fitting of the actuator; 8 — inlet pressure pipeline; 9 - control knob (low or high pressure); 10 — control regulator throttle; 11 — control pressure pipeline; 12 — shut-off valve spring; 13 — shut-off valve lever; 14 — control mechanism rod; 15 — large spring adjusting screw; 16 — small spring adjusting screw; 17 — control mechanism; 18 — fitting of the control mechanism; 19 — actuator throttle; 20 — control regulator fitting; 21 — bracket; 22 — large spring; 23 — small spring; 24 — bracket; 25 — bracket; 26 - screw; 27 — bracket

The actuator 2 consists of a housing with a seat 3, a membrane with a rigid center 6, clamped along the perimeter between the upper and lower covers; the rigid center, through the pusher and rod 5, transmits the movement of the membrane to valve 4, thereby changing the flow and output pressure of the regulator.

Pilot low pressure 9 (see Fig. 4.21) consists of three functional blocks: a filter, a stabilizer and the pilot itself, mounted in one housing. The high pressure pilot does not use a stabilizer.

The filter is mounted on the pilot housing and provides fine cleaning working environment through filter mesh 5. Designed to ensure long-term operation of the pilot. The stabilizer is mounted on the housing and ensures a reduction in the inlet pressure entering through the inlet pipeline to the value required for stable operation pilot and actuator. The stabilizer consists of a valve 6 with a seat, a membrane unit 7 and a spring 8. The pilot itself is mounted in the housing and serves to control the regulator actuator. Control is carried out by the pilot creating control pressure, which enters through the connecting pipeline 11 into the control cavity of the actuator. The pilot consists of valve 1, membrane unit 2 with membrane 10, adjusting spring 3, plate 4, adjusting screw 9 and pilot throttle 11.

Rice. 4.21. Control regulator device diagram: 1 — pilot valve; 2 — membrane pilot assembly; 3 — adjusting spring; 5 — filter mesh; 6 — stabilizer valve; 7 — membrane stabilizer assembly; 8 — stabilizer spring; 9 — adjusting screw; 10 — pilot membrane; 11, 12 — throttle

Adjustable chokes 10, 28 and 19 (see Fig. 4.20) are used to configure the regulator for quiet (without self-oscillation) operation. The throttle consists of a fitting and a needle screwed into it. By turning the needle in and out, the flow area of the fitting changes, thereby changing the gas flow through the throttle and the pressure drop across it. By increasing the pressure drop across the throttle, self-oscillations of the output pressure are eliminated.

The control mechanism 17 of the shut-off valve is designed to continuously monitor the output pressure and issue a signal to operate the shut-off valve in the actuator in the event of an emergency increase or decrease in the output pressure above the permissible set values.

The control mechanism consists of two detachable covers, a membrane assembly clamped around the perimeter by the covers, a control mechanism rod 14, a large 22 and a small 23 springs that balance the action of the output pressure pulse on the membrane.

The regulator works as follows.

Gas enters the input of the actuator 2 and the control regulator 9 (see Fig. 4.20).

The control regulator generates control pressure, which is supplied through pipeline 11 through throttle 19 into the submembrane cavity of the actuator.

In steady state, when the gas flow is constant, the control regulator maintains a constant control pressure in the submembrane cavity. As a result, valve 4 is installed in the corresponding unchanged position, which determines the constancy of the output pressure of the regulator. The output pressure range is set by adjusting screw 9 (see Fig. 4.21).

Operation of the regulator when the flow rate changes.

Before starting the regulator, when the flow rate is zero, valve 4 is closed, since the pressure difference between the sub-membrane and supra-membrane cavities is zero. When the regulator opens, the pressure in the supra-membrane cavity of the actuator will drop, resulting in a pressure difference between the sub-membrane and supra-membrane cavities. As a result, the membrane with rod 5 and valve 4 will begin to move, and valve 4 will open the passage of gas through the resulting gap between the valve and the seat, and the previously specified outlet pressure will be established.

With a further increase in flow rate, the pressure difference between the above-mentioned cavities of the actuator increases, the valve will open even more, while the output pressure will be maintained at a value not previously set.

As the gas flow rate decreases, the pressure drop between the cavities of the actuator decreases, as a result of which the passage of gas through the decreasing gap between the valve and the seat will decrease. In this case, the regulator will maintain the previously set output pressure.

In the event of an emergency increase or decrease in the output pressure, the membrane of the control mechanism 17 moves to the left or right, the shut-off valve lever comes out of contact with the rod 14 of the control mechanism, and the shut-off valve, under the action of spring 12, blocks the flow of gas to the regulator.

Rice. 4.22. Connection diagram of impulse tubes to the regulator: 1, 2, 3 - impulse tubes (pipeline DN 8, length - according to location, material - pipe DKRNM8x1 GOST 617-2006); 4 — union nut M14x1-7N with nipple; 5, 6 - welded fitting M14x1 - 6e, cutting of the end of the fitting (see Fig. 4.20); 7 — distributor (pipe 1/4", 3/4")

Specifications

	RDG-50N	RDG-50V	RDG-80N	RDG-80V	RDG-150N	RDG-150V
Working environment	natural gas according to GOST 5542-87
Inlet pressure range, MPa	0,05-1,2	0,1-1,2	0,05-1,2	0,1-1,2	0,05-1,2	0,1-1,2
Output pressure setting range, kPa	1,5-60	60-600	1,5-60	60-600	1,5-60	60-600
Maximum throughput, m3/h, not less	7100	7100	14600	14600	32000	32000
Unevenness of regulation, %	±20	±20	±20	±20	±20	±20
Actuation pressure of the control mechanism, MPa: when outlet pressure decreases when outlet pressure increases at P out. = 0.003 MPa	(0.15-0.5)Rout. (1.25-1.5)Rout. 0,0045-0,0075
Seat diameter, mm	30, 35, 40, 45	30, 35, 40, 45	65	65	98	98
Diameter of inlet and outlet connecting pipes, mm	50	50	80	80	150	150
Accession	flanged according to GOST 12820-80
Overall dimensions, mm	670 x 530 x 400	670 x 530 x 400	700 x 600 x 460	700 x 600 x 460	800 x 800 x 650	800 x 800 x 650
Construction length, mm	365	365	502	502	570	570
Weight, kg	42	42	85	85	153	150

Control pilot KN-2 (KV-2) for RDG-25

Control pilot KN-2 (KV-2) for RDG-50

Control pilot KN-2 (KV-2) for RDG-80

Control pilot KN-2 (KV-2) for RDG-150

When ordering, please specify the year of manufacture and the intended manufacturer of the pressure regulator for which the control pilot is required. If you find it difficult to determine the year of manufacture and manufacturer yourself, you can email us a photo of the regulator pressure RDBC, RDUK, RDG and we ourselves will determine. We also manufacture other spare parts and repair kits for gas pressure regulators such as RDBC, RDUK, RDG.

A short list of spare parts for gas equipment:

For RDBK1-25, RDBK1-50, RDBK1-100, RDBK1-200

For RDG-25, RDG-50, RDG-80, RDG-150

Stabilizer (pilot), pilot (stabilizer) spring, pilot (stabilizer) diaphragm, pilot (stabilizer) seat, pilot (stabilizer) valve, pilot (stabilizer) valve spring, pilot (stabilizer) plate, working (main) diaphragm, seat, working valve, throttle, rod, set of tubes, shut-off valve assembly, shut-off valve membrane, left spring, right spring, shut-off valve, adjustment springs

For PKN-50, PKN-80, PKN-100, PKN-200, PKV-50, PKV-80, PKV-100, PKV-200

Large spring, small spring, membrane, valve

For KPZ-25, KPZ-50, KPZ-80, KPZ-100, KPZ-150, KPZ-200

Big spring, small spring, upper arm with hook, lower lever, diaphragm, valve, slam-shut assembly

For RDUK-50, RDUK-100, RDUK-200

Pilot KN, pilot KV, Pilot membrane, pilot seat, pilot valve, pilot valve spring, pilot plate, working membrane (main), seat, working valve, throttle, rod, impulse tube

For RDP-50, RDP-100, RDP-200

Stabilizer (pilot), pilot (stabilizer) spring, pilot (stabilizer) diaphragm, pilot (stabilizer) seat, pilot (stabilizer) valve, pilot (stabilizer) valve spring, pilot (stabilizer) plate, working (main) diaphragm, working spring , operating valve, throttle, impulse tubes

For PSK-25, PSK-50

Diaphragm, springs, valve with guides

Request!!! When ordering spare parts from us, please specify the year of manufacture and manufacturer on the device tag.

This is done for more precise selection necessary spare parts specifically for your device. For example, the same device called RDBK1-50 has been produced for more than 60 years. Initially, it was produced by 2 factories, in the 2000s there were already 4-5 manufacturers, and in last years the number of manufacturers increased to over 10. Plus, some factories made changes to the design every few years. This might not be noticeable to users of this equipment, but it was reflected in the spare parts of the device. The size and material of the membranes could change, the rods, springs, materials of the seats and pilots could change. As a rule, the casting of the device itself has also changed - previously it was cast iron, but in recent years it has been replaced by an aluminum alloy. Spare parts from one metal were replaced with another cheaper or more common one. Plus, some spare parts, especially in recent years, have changed towards cheaper prices in order to gain a price competitive advantage. Or, for example, working membranes used to be cut from a special membrane fabric, and later they could be replaced by cast ones from special rubber with a reinforcing thread. These changes apply to all known types gas equipment, such as regulators RDG, RDBC, RDUK, RDSC, RDGD, valves KPZ, PSK, PKN, PKV, PKK, KPEG. We also inform you that most of the above devices over the past 65 years have been produced in the Saratov region because It was from here that the first gas pipeline in Russia stretched in 1945. and at the same time the first gas equipment plant started operating here and later the leading gas research institute GiproNIIgaz was formed. Therefore, you will most likely find spare parts for the above devices in Saratov or the satellite city of Engels. Please send us a photo of the device tag to our email. The manufacturer, year of manufacture and brand of the device are usually indicated there. Moreover, the manufacturer indicated on the tag is not always the actual plant that manufactured this device. The device could simply be purchased from another manufacturer and a tag from another manufacturer was subsequently installed on it, either having permits for its production or not having any (at all rare case). If the device tag is not readable, then you can see the manufacturer’s logo on it. If there is no tag on the device, then it is advisable to send us a scan of the device passport. The manufacturer and year of manufacture are also indicated there. In some cases, the passport also comes from a different manufacturer because... The old passport was lost and a similar one was enclosed as a replacement. In this case, to determine the ownership of the device, we will need a photo of it from different sides. Due to our many years of experience, even if the device is without a tag and with someone else’s passport, in 90% of cases we will be able to determine whose it is. It is extremely difficult for an outsider to understand these long-term changes in designs and compliance. For this, at a minimum, gas industry specialists with experience in working with this equipment are required. different manufacturers from 10-15 years. Our company currently has employees with over 16 years of experience. Summarizing all of the above, in order to process your application faster, we expect from you:

Year of manufacture, device manufacturer, exact brand. If this information is unknown, then we are waiting for a photo of the device from different sides and a scan of the passport (first and last 2 pages).

Delivery of KN-2 (KV-2) control pilots to the RDG, RDUK, RDBK regulators is carried out transport companies in such Russian cities as: Moscow, St. Petersburg, Veliky Novgorod, Vologda, Kirov, Pskov, Yaroslavl, Kostroma, Tver, Ivanovo, Vladimir, Nizhny Novgorod, Yoshkar-Ola, Vitebsk, Smolensk, Kaluga, Minsk, Ryazan, Saransk, Bryansk, Penza, Syzran, Kursk, Lipetsk, Voronezh, Tambov, Belgorod, Volgograd, Rostov-on-Don, Donetsk, Lugansk, Simferopol Yalta, Alupka, Alushta, Feodosia, Kerch, Sevastopol, Sudak, Evpatoria, Uralsk, Aktyubinsk, Orenburg, Orsk, Karaganda, Krasnodar, Sochi, Taganrog, Novorossiysk, Stavropol, Elista, Nalchik, Kislovodsk, Pyatigorsk, Mineralnye Vody, Nevinnomyssk, Hot key, Maykop, Tuapse, Gelendzhik, Armavir, Grozny, Vladikavkaz, Makhachkala, Kaspiysk, Izberbash, Derbent, Elista, Astrakhan, Samara, Ulyanovsk, Ufa, Izhevsk, Tolyatti, Kazan, Cheboksary, Ekaterinburg, Tyumen, Chelyabinsk, Kurgan, Omsk, Tomsk , Astana, Novosibirsk, Kemerovo, Barnaul, Novokuznetsk, Krasnoyarsk, Irkutsk, Ulan-Ude, Vladivostok, Yuzhno-Sakhalinsk, Arkhangelsk, Murmansk, Petrozavodsk, Ukhta, Syktyvkar, Perm, Nizhny Tagil, Naberezhnye Chelny, Magnitogorsk, Bishkek, Aktobe, Alma -aty, Astana, Pavlodar, Kostanay, Atyrau, Aktau, Shimkent, Khorgos, Talas, Karakol, Naryn, Osh, Jalal-abad, Batken, Kotlas, Surgut, Bratsk, Velsk, Rossosh.

The utility model relates to automatic gas control technology, namely gas control equipment, and can be used in gas supply systems for industrial, agricultural facilities, as well as public utility facilities that require automatic maintenance of gas outlet pressure at given level. The problem to be solved by the claimed technical solution, is to create a simple and reliable direct-flow gas pressure regulator. The technical result is to increase the stability and safety of the gas pressure regulator. Gas pressure regulator contains an actuator configured to be connected between the input and output lines, and connected on the side of the input line to a pressure stabilizer, in turn connected to the pilot. The actuator includes a housing with a cover, a membrane drive dividing the cavity of the actuator into actuator and control chambers, while the pilot output is connected through the first throttle to the control chamber, and the output line is connected to the actuator chamber and the pilot. The regulator is equipped with an impulse rack with a second throttle located in it, designed to ensure the elimination of fluctuations in the output pressure during operation, while the impulse rack is fixed to the body of the actuator from the side of the entrance to the actuator chamber, providing a connection of the output line with the actuator chamber and the pilot, and the first throttle is located in the cover of the actuator, the stabilizer is configured to regulate the output gas pressure, and the pilot output, connected through the first throttle to the control chamber, is simultaneously connected through the second throttle to the actuator chamber. In addition, the pilot is provided with an adjustment cup built into the pilot body and movable to provide adjustment of the outlet pressure. The membrane element of the membrane drive of the actuator, as well as the membrane element of the pilot, can be made cast, for example, from raw rubber NO-68, and the housing with the cover of the actuator is made of aluminum grades from AK 5 M2 to AK 12 OCH. The working surface of the actuator valve is covered with a layer of vulcanized rubber. The control glass and the pilot body are connected via threaded connection, while the cavity of the adjusting cup is made in communication with the cavity of the pilot body, which is made of aluminum.

The utility model relates to automatic gas control technology, namely gas control equipment, and can be used in gas supply systems for industrial, agricultural, and public utility facilities that require automatic maintenance of the gas output pressure at a given level. The design of the claimed utility model provides high reliability during operation and can be recommended for installation in natural gas supply systems for hazardous production facilities.

With the help of gas pressure regulators, the operating mode of the gas distribution system is controlled, which automatically maintains a constant pressure at the sampling point, regardless of the intensity of gas consumption. When regulating pressure, the initial - higher - pressure decreases to the final - lower. This is achieved by automatically changing the degree of opening of the membrane unit of the regulator actuator, as a result of which the resistance to the passing gas flow automatically changes.

An automatic pressure regulator consists of a master and an actuator. The main part of the actuator is a sensitive element that compares the signals from the setpoint and the current value adjustable pressure. Actuating mechanism converts the command signal into a regulatory action and into the corresponding movement of the moving part of the regulatory body due to the energy of the working medium - gas. Regulation is ensured by the moving state of the regulating body of the actuator.

In gas distribution systems, the following types of automatic gas pressure regulators are most common (by type of load):

Direct-acting gas pressure regulators with spring and lever-spring loads, for example gas pressure regulators RDGD-20 and RDSC-50, in which the force of the working membrane is transmitted directly to the valve located on the rod and fixed in the center of the membrane. In order to unload the valve from the influence of inlet pressure, an additional unloading membrane is used.

Indirect-acting gas pressure regulators with a command device - a control regulator (pilot), for example, devices such as RDUK2, RDBK1, RDG. The regulation process is determined by the interaction of the output pressure on the working membrane, the force of the so-called control pressure supplied from the pilot to the sub-membrane space, the load of the moving parts, and the friction forces in the connections (http://www.exform.ru/catalog/regulator/RDP/).

Pilot gas pressure regulators have fairly wide ranges of inlet and outlet pressure and throughput. These factors are ensured by the action on the working membrane of the gas pressure regulator of the sub-diaphragm control pressure created by the pilot, instead of the direct action of the tuning spring on the membrane.

A direct-flow gas pressure regulator is known, containing a housing with a closable hole and coaxial outlet and inlet pipes. In the housing, on the same axis with the pipes, there is a piston sensitive drive with a radial bracket having channels for supplying set and output pressures, and a shut-off and control element containing a valve and a seat. The device is equipped with a manifold concentrically located to the valve, made in the form of a cylinder with windows for the passage of gas, having a flow area that varies depending on the stroke of the valve, determined by the required flow characteristics. One part of the commutator is rigidly connected to the drive, and in the other, with axial and radial clearances, a movable seat made of hard alloy with a seal along the supporting end is installed. The surface of the seat in contact with the gas flow and the valve is made cone-shaped, and its profile is part of the overall smooth profile of the gas channel (RF Patent for invention 2125737, IPC: G05D 16/06).

This invention is characterized by increased reliability of the shut-off and control body of the direct-flow gas pressure regulator, but does not provide high stability operation during sudden surges in gas pressure supplied to the regulator input.

A known direct-acting gas pressure regulator RDUV manufactured by Staroruspribor LLC, which includes an actuator with mating flanges and a master device connected to the actuator by copper or brass tubes. As a master device, either a master gearbox is installed on RDU 100/50 and RDU 100/80, or a differential gearbox with an amplifier on RDU 100/100 and RDU 63/100. Actuators of regulators of all standard sizes are structurally similar and differ from each other in standard sizes and are the final link of the automatic control system. When the valve moves, the flow area of the actuator changes, and, consequently, the amount of gas passing through. This ensures that the outlet pressure is maintained at a given value when gas consumption or inlet pressure fluctuates. The valve moves due to a change in the control pressure supplied to the actuator drive from the master device. Inlet pressure gas is used to power the master device. The actuator consists of a housing with a cover, a diaphragm drive, a valve, a return spring, a seat and a casing. The seat is located in the internal cavity of the cover on the ribs. To ensure the tightness of the actuator, the latter is equipped with a gasket attached to the seat by means of a screw. The valve is made in the form of a thin-walled pipe and is connected to the membrane drive using a disk and two washers. IN starting position the shutter is pressed to the seat by a return spring (see http://www.staroruspribor.ru/files/catalog/gallery/0/66/9.pdf Operating manual RDU 00.00.00RE).

A gas pressure regulator is also known, containing an actuator, a pressure stabilizer with a bypass line and a pilot having a multi-chamber design, an adjustable throttle and a valve. The stabilizer is made with a bypass line hidden inside the housing, which is a channel in the partition of the stabilizer housing. The pilot is made with a channel in which the pilot valve is centered, and the adjustable throttle is installed in the pilot wall, such that its axis is parallel to the pilot axis and it is connected to the pilot chambers using channels (Patent for invention 2319193, IPC: G05D 16/00) .

However, known gas pressure regulators are characterized unstable work during sudden surges in gas pressure supplied to the inlet of the regulator.

The closest to the claimed technical solution is a gas pressure regulator containing an actuator, a pressure stabilizer and a pilot. The pilot engages the adjustable throttle. The pilot output line is connected to the control chamber of the actuator and through an adjustable throttle to the gas consumer pipeline, and the output of the actuator is connected to the line feedback pressure stabilizer and pulse chamber of the actuator (RF utility model patent 25105, IPC: G05D 16/06).

However, this gas pressure regulator is also characterized by unstable operation during sudden surges in the gas pressure supplied to the inlet of the regulator.

The problem to be solved by the proposed technical solution is the creation of a simple and reliable direct-flow gas pressure regulator.

The technical result is to increase the stability and safety of the gas pressure regulator.

The problem is solved by the fact that the gas pressure regulator contains an actuator, configured to be connected between the input and output lines, and connected on the side of the input line to a pressure stabilizer, in turn connected to the pilot; the actuator includes a housing with a cover, a membrane drive , dividing the cavity of the actuator into the actuator and control chambers, while the pilot output is connected through the first throttle to the control chamber, and the output line is connected to the actuator chamber and the pilot, according to the technical solution, is equipped with an impulse rack with a second throttle located in it, configured to ensuring the elimination of fluctuations in output pressure during operation, while the pulse rack is fixed to the body of the actuator from the side of the entrance to the actuator chamber, ensuring the connection of the output line with the actuator chamber and the pilot, and the first throttle is located in the cover of the actuator, the stabilizer is configured to regulate the output gas pressure, and the pilot output, connected through the first throttle to the control chamber, is simultaneously connected through the second throttle to the executive chamber.

In addition, the pilot is provided with an adjustment cup built into the pilot body and movable to provide adjustment of the outlet pressure. The membrane element of the membrane drive of the actuator, as well as the membrane element of the pilot, can be made cast, for example, from raw rubber NO-68, and the housing with the cover of the actuator is made of aluminum grades from AK 5 M2 to AK 12 OCH. The working surface of the actuator valve is covered with a layer of vulcanized rubber. The control glass and the pilot body are connected by means of a threaded connection, and the cavity of the control glass is made in communication with the cavity of the pilot body, which is made of aluminum.

In the claimed utility model, the pilot is used as a pressure setter. Pressure is supplied to the pilot through an adjustable stabilizer, ensuring a constant pressure drop across the pilot. The presence of an adjustable stabilizer allows you to stabilize the pressure at the outlet depending on the inlet pressure. Accordingly, a pressure of a given value is supplied to the pilot input, configured for “normal” (uninterrupted) operation of the pilot. The presence of an impulse stand makes it easier to install the regulator on the site. The presence of a second throttle located in the pulse rack ensures that the pressure regulator is configured to operate without self-oscillations.

The utility model is illustrated by drawings, where Fig. 1 schematically shows the inventive design, Fig. 2 - a block including an actuator with a pulse rack, Fig. 3 - assembled device, top view. The positions in the drawing indicate: 1 - actuator, 2 - stabilizer, 3 - pilot, 4 - impulse rack, 5, 6 - chokes, 7 - actuator housing, 8 - actuator housing cover, 9 - membrane drive, 10 - actuator (pulse) chamber, 11 - control chamber, 12 - sleeve (sleeve-shutter), 13 - spring, 14 - valve, 15 - nut, 16 - membrane element, 17 - disk, 18 - fasteners, 19 - 21 actuator channels devices, 22 - sealing elements, 23 - pilot body, 24 - pilot cover, 25 - pilot membrane element, 26 - raft valve, 27 - pilot rod, 28 - spring, 29 - glass.

The direct-flow gas pressure regulator contains an actuator 1, a stabilizer 2 and a pilot 3 connected by pipelines. The regulator is equipped with a pulse rack 4 mounted on the actuator 1, and two chokes 5, 6. The actuator 1 is a housing 7 with an inlet flange, equipped with a cover 8 with outlet flanges. A membrane actuator 9 is fixed between the body 7 and the cover 8, dividing the cavity of the actuator 1 into an actuator (pulse) 10 and a control chamber 11, which is connected to a shut-off element in the form of a movable sleeve (shutter sleeve) 12. The sleeve is made with the possibility of reciprocating movement in the guide bushings of the body and cover. In the initial state, the sleeve 12 is pressed by a spring 13 and interacts with the valve 14, fixedly fixed in the cover 8 by means of a nut 15. In this case, the pulse chamber 9 is formed by the walls of the housing 7 and the membrane actuator, the control chamber 10 is formed by the membrane actuator and the cover 8. The membrane actuator 9 represents is a membrane element 16 with a plate, fixed to the disk 17 by means of fasteners 18. The membrane element 16 is made by casting from raw rubber NO-68. The actuator 1 is equipped with channels 19, 20 for supplying set and output pressures, made in the housing 7 and cover 8, respectively, as well as channel 21, made in the inlet flange for communication with the stabilizer. In this case, channel 19 is intended to connect the cavity pulse chamber 10 with pilot 3, channel 20 - for connecting the control chamber 11 with the output line (gas outlet pipeline). The actuator is equipped with sealing elements 22, made in the form of rubber rings, designed to seal the sleeve 12 during its reciprocating movement. The working surface of the valve 14 is covered with a layer of vulcanized rubber. The first throttle 5 is built into the channel 20, located in the cover on the side of the control chamber. The connection of the cavity of the chamber 10 with the pilot 3 and the output line is carried out through a pulse rack 4, which is fixed to the body 7 and is equipped on the gas inlet side coming from the stabilizer with a second throttle 6. The housing of the actuator can be made of AK 5 M2 aluminum.

The stabilizer 2 is configured to regulate the gas pressure at the outlet to ensure a stable supply of gas to the inlet of the pilot 3, which eliminates the influence of fluctuations in the inlet pressure on the operation of the regulator as a whole. The output of the pilot 3 is connected through the first throttle 5 to the control chamber 11 and through the second throttle 6 to the actuator chamber 10. The purpose of the pilot is to set the pressure value on the output line (behind the actuator) and maintain its constant value. The pilot is similar in design to the stabilizer and consists of a housing 23 with a cover 24, between which there is a spring-loaded membrane element 25, made of cast rubber, connected to the valve 26 using a rod 27, while the valve 26 is pressed by a spring 28. The pilot is equipped with an adjusting cup 29 , located coaxially with the cylindrical cavity of the housing 23. The adjusting cup 29 and the pilot housing 23 are connected by means of a threaded connection that ensures the movement of the cup 29 necessary to adjust the outlet pressure. The pilot housing 23 is made of aluminum. The output gas pipeline (output line) is connected through the channel of the pulse rack 4 to the supra-membrane cavity of the pilot 3 and the executive chamber 10.

The gas pressure regulator works as follows. If there is no pressure at the input of the regulator, under the influence of spring 13, sleeve 12 is pressed against the operating valve 14. The regulator is closed, there is no gas in the output line (gas consumer pipeline). The stabilizer and pilot are pre-set to the required gas pressure. When gas is supplied to the inlet line, the inlet pressure enters the actuator 1 and the input of the stabilizer 2. From the outlet of the stabilizer 2, the reduced (set) pressure enters the inlet of the pilot 3. From the pilot 3, the reduced pressure enters through the throttle 5 into the control chamber 11, and also through the throttle 6, mounted on the pulse rack 4, into the actuating chamber 10. The actuating chamber 10 is connected to the gas pipeline (output line) behind the regulator. A controlled gas pressure is also supplied to the supra-membrane cavity of the pilot 3. Due to the continuous flow of gas through the throttle 5, the pressure in front of it, and therefore in the control chamber 11 of the actuator 1, is always higher than the output (controlled) pressure. The difference on the membrane element 16 of the actuator 1 creates an axial force, which, under any established mode of operation of the regulator, is balanced by the pressure difference across the valve 14. Any change in the input pressure or gas flow instantly causes a deviation of the output pressure from the set one and, therefore, a movement of the membrane element 25 of the pilot 3 In this case, the gas flow at the pilot outlet changes and, as a result, the gas pressure in the control chamber 11 of the actuator 1, which causes the membrane actuator 9 with the sleeve 12 to move to a new equilibrium state, in which the output pressure returns to the set value. Adjustable throttles are used to configure the regulator to operate without self-oscillation.

The claimed technical solution is characterized high level safe operation and long service life without maintenance (up to 20 years or more). The presence of adjustable pilots and stabilizers in the circuit, as well as the presence of seals and high manufacturing precision, make it possible to increase the stability of the regulator during sudden surges in gas pressure supplied to the device input. The declared device fully retains all the advantages direct-flow regulators: unloading of the valve seat with an increase in its diameter, and therefore an increase in throughput, tightness of the valve, virtual absence of noise and vibration. The stability of maintaining the outlet pressure is 1-2%. The regulator operates equally stably when the input pressure decreases to 0.05 MPa and when it increases to the maximum. Fully stable parameters were obtained with sudden changes in output pressure and flow rates. The freezing effect is completely absent. At zero gas flow, the pressure increase after the regulator is within the limits of maintaining the stability of the outlet pressure.

1. A gas pressure regulator containing an actuator, configured to be connected between the input and output lines and connected from the input line to a pressure stabilizer, in turn connected to the pilot; the actuator includes a housing with a cover, a membrane drive dividing the cavity of the actuator to the actuator and control chambers, wherein the pilot output is connected through the first throttle to the control chamber, and the output line is connected to the actuator chamber and the pilot, characterized in that it is equipped with an impulse rack with a second throttle located in it, designed to ensure the elimination of oscillations of the output pressure during operation, while the pulse rack is fixed to the body of the actuator from the side of the entrance to the actuator chamber, providing a connection of the output line with the actuator chamber and the pilot, and the first throttle is located in the cover of the actuator, the stabilizer is configured to regulate the output gas pressure, and The pilot output, connected through the first throttle to the control chamber, is simultaneously connected through the second throttle to the control chamber.

2. The gas pressure regulator according to claim 1, characterized in that the pilot is equipped with an adjustment cup built into the pilot body and movable to adjust the output pressure.

3. The gas pressure regulator according to claim 1, characterized in that the membrane element of the membrane drive of the actuator is made of cast raw rubber NO-68, and the housing with the cover of the actuator is made of aluminum grades from AK 5 M2 to AK 12 OCH.

4. The gas pressure regulator according to claim 1, characterized in that the working surface of the actuator valve is covered with a layer of vulcanized rubber.

5. The gas pressure regulator according to claim 1, characterized in that the pilot membrane element is made of cast rubber.

6. The gas pressure regulator according to claim 2, characterized in that the control glass and the pilot body are connected by means of a threaded connection, and the cavity of the control glass is made in communication with the cavity of the pilot body, which is made of aluminum.

Gas pressure regulator RDUK designed to reduce gas pressure and automatically maintain output pressure within specified limits, regardless of changes in inlet pressure and gas flow. The regulator is used in gas supply systems of industrial, agricultural and municipal facilities.

DN 50 are manufactured with a saddle of 35 mm, DN 100 with a saddle of 50, 70 mm, DN 200 with a saddle of 105, 140 mm. The diameter of the seat affects the capacity of the regulator; the larger the seat, the greater the capacity of the regulator.

We manufacture RDUK gas pressure regulators based on gas control points and gas control units of cabinet, block or frame type.

Available RDUK models

RDUK is manufactured in the following modifications:

RDUK-50N(V) Du-50 with low or high output pressure and seat diameter 35 mm - RDUK-50N(V)/35;

RDUK-100N(V) Du-100 with low or high output pressure and seat diameter 50, 70 mm - RDUK-100N(V)/50(70);

RDUK-200N(V) Du-200 with low or high output pressure and seat diameter 105, 140 mm - RDUK-200N(V)/105(140).

Gas pressure regulators RDUK-200 are available in four versions:

With low outlet pressure and a seat diameter of 105 mm - RDUK 200 MN/105;
- with low outlet pressure and seat diameter of 140 mm - RDUK 200 MN/140;
- with high output pressure and a seat diameter of 105 mm – RDUK 200 MV/105;
- with high output pressure and a seat diameter of 140 mm - RDUK 200 MV/140.

RDUK throughput:

- RDUK 50 6500 m3/h

- RDUK 100 12000/24500 m3/h

- RDUK 200 47000/70000 m3/h

The climatic design complies with UZ GOST 15150 (from –45°C to +40°C).

The gas pressure regulator RDUK 200 complies with the requirements of GOST 11881, GOST 12820 and a set of documentation in accordance with the specification RDUK 200M.00.00.00.

Technical and performance characteristics regulators RDUK-50/100/200

Name of parameter or size		Values for type or version
		RDUK-2N-50	RDUK-2N-100		RDUK-2N-200
		RDUK-2V-50	RDUK-2V-100		RDUK-2V-200
Nominal diameter of the inlet flange, DN
Seat diameter, mm
Maximum input pressure, MPa (kgf/cm2)		1,2 (12)	1,2 (12)		1,2 (12)	0,6 (6)
Output pressure setting range, MPa (kgf/cm2)	for low pressure regulator	0,005-0,06 (0,05-0,6)
	for high pressure regulator	0,06-0,6 (0,6-6,0)
Maximum throughput, m3/h, not less		6000	12000	24500	37500	47000
Overall dimensions, mm	face-to-face length
	width
	height
Flanges (design and dimensions) according to GOST 12820-80 for nominal pressure MPa
Weight, kg, no more

Gas regulator RDUK. Dimensions and technical characteristics:

Regulator type	Operating pressure		Overall dimensions, mm	Weight, kg
Regulator type	Entrance R 1, MPa	Exit R 2, kPa	Overall dimensions, mm	Weight, kg
RDUK2N-50/35	0,6	0,6–60	230×320×300	45
RDUK2V-50/35,	1,2	60–600	230×320×300	45
RDUK2N-100/50	1,2	0,5–60	350×560×450	80
RDUK2V-100/50,	1,2	60–600	350×560×450	80
RDUK2N-100/70	1,2	0,5–60	350×560×450	80
RDUK2V-100/70	1,2	60–600	350×560×450	80
RDUK-200MN/105	1,2	0,5–60	610×710×680	300
RDUK-200MV/105	1,2	60–600	610×710×680	300
RDUK-200MN/140	1,2	0,5–60	610×710×680	300
RDUK-200MV/140	1,2	60–600	610×710×680	300
RDUK2N-200/105	1,2	0,5–60	600×650×690	300
RDUK2V-200/105	1,2	60–600	600×650×690	300
RDUK2N-200/140	0,6	0,5–60	600×650×690	300
RDUK2V-200/140	1,2	60–600	600×650×690	300

The RDUK pressure regulator stands for Kazantsev universal pressure regulator.

A pressure regulator of this type is installed in order to reduce the pressure of natural gas. And also implement on automatic level maintaining the outlet pressure within strictly specified limits. With all this, the level of this maintenance should not be influenced in any way by fluctuations in either the level of inlet pressure or the amount of gas flow.

RDUK gas pressure regulators are used in a wide variety of areas where gas supply may be required. Such objects can be industrial, such as factories, and other large industrial enterprises, or agricultural, as well as directly public utility enterprises and facilities.

All three models combined general principle work, however, they also have specific differences that should be taken into account when choosing a regulator, based on the tasks that need to be solved with the help of its installation.

Basic distinctive feature Each of the RDUK pressure regulator models has a seat size. RDUK 2 50 is available with a seat size of 35 mm. In turn, RDUK 2 100 is available with saddle sizes in two variations - 50 and 70 mm. And RDUK 2 200 has a saddle of 105 or 140 mm.

Saddle size is extremely important characteristic for selection the right type and type of gas pressure regulator. Therefore, the exact size of the seat and its diameter have a huge impact on the transmittance of the regulator. The smaller the saddle, the smaller the throughput. Respectively, larger size will provide such a regulator with greater throughput.

Design and principle of operation

Specifications

Available RDUK models

Read also