GPR-A200 Series Self-acting Gas Pressure Regulator
※ Applicable to the control of outlet pressure of long-distance natural gas pipeline distribution station pressure regulating device, station self-use gas pressure regulating device, and city gas pressure regulating station
※ Applicable to all other non-corrosive gases
Features
※ Jointly developed products for localization of key equipment for oil and gas pipelines of China National Petroleum Corporation
※ TS-A gas pressure regulating valve manufacturing license issued by the General Administration of Quality and Technical Supervision, Inspection and Quarantine
※ Valve body straight-through (axial flow) with large flow and low noise, flow velocity <50m/s, noise <80dB
※ Large adjustment range, high adjustment accuracy, durable
※ Standard local valve position indicator
※ Can be equipped with valve position sensor transmitter
※ Available with outlet reducer and internal noise reduction device
Product Parameters
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Standards
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IN 334
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Nominal pressure
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CLass150 ～ CLass1500 （ 2MPa - 26MPa）
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Nominal size
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DN25 ～ DN300 （NPS 1〞 ～ NPS 12〞）
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Connection
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Flange ANSI B16.5 RF, RTJ
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Design temperature
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-29℃ ～ 60℃ ； -46℃ ～ 60℃
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Inlet pressure
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15MPa (may be lower than this value depending on flange grade)
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Outlet pressure range
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0.1MPa～11MPa
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Accuracy Class AC
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±1%（AC1）， ±2.5%（AC2.5）， ±5%（AC5）
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Closing pressure level SG
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2.5% (SG 2.5), 5% (SG5), 10% (SG10)
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Closed pressure zone class SZ
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2.5% （SZ2.5）
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Minimum pressure difference between inlet and outlet
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0.5MPa
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Explosion proof/protection grade
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Not less than ExdIIBT4, IP65
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Main Materials
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Main valve body Forged steel A105, A350 LF2
pilot housing Forged steel, forged aluminum
Internal parts Stainless steel, steel, copper, aluminum
Closing spring Spring steel (X750, A276, 316)
Sealing material Reinforced polytetrafluoroethylene, nitrile rubber, synthetic rubber
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How it works
The gas pressure regulating valve is a pressure control device in the pressure regulating device. The inlet pressure of the pipeline network enters the control controller after being stabilized by the front controller. After the control controller regulates the pressure, the output load pressure enters the valve rear chamber, pushes the diaphragm, overcomes the spring force, opens the valve port, and achieves pressure reduction and stable flow output.
When the downstream gas consumption decreases, the feedback pressure after the pressure regulating valve increases and is fed back to the control controller through the measuring pipeline, causing the control controller to lose balance. Its output load pressure decreases, and the balance inside the pressure regulating valve is also broken. Under the action of the spring and feedback pressure, the diaphragm makes the valve opening smaller or even closed, causing the outlet pressure of the pressure regulating valve to drop back to the set pressure value.
When the downstream gas consumption increases, the downstream feedback pressure decreases, and the actions of its various parts are opposite.
Product Structure Diagram
Commander structure diagram
Product Dimensions
Dimensional connection
Pressure sampling point piping connection size
Pressure sampling point installation location
As shown in Figures 3 and 4, the pressure sampling point of the gas pressure regulating valve (PCV) is 5-8× the distance of the pipeline diameter after the working valve (PCV or PV).
Product Ordering Selection
Pressure regulating valve selection
Pilot Selection
Other special configuration requirements
* If you need to select the outlet reducer and internal noise reduction device, please indicate the model as GPR-A200b. Other options are the same as above.
