TianJin Better Fluid Control Valves CO., LTD

GPR-A200 Gas Pressure Regulator

For gas transmission, for gas supply to industrial and power plants

For outlet pressure control, inlet or differential pressure control

Suitable for natural gas, other non-aggressive gases on request

Characteristics 3D Download

Features

High capacity due to axial flow

High range ability and high pressure cuts

Valve sleeves are specially coated to eliminate slip stick

Noise reducing outlet duct and /or internal silencer available

Local position indicator standard

Electric valve-position remote indicator available

Simple design, purely pneumatic operation, robust

Fail to close / fail to open models available

Provided with a noise reducing outlet duct and /or an internal silencer

Technical Data

Function and Strength	Acc. to EN 334
Nominal Pressure	Class150 ～ Class1500 （ 2MPa - 26MPa）
Nominal Size	DN25 ～ DN300 （NPS 1〞～ NPS 12〞）
Connections	Flanged to ANSI B16.5 RF, RTJ
Temperature Class 2	-29℃~60℃, -46℃~60℃
Max. Operating Pressure PSmax	15MPa (Could be less - acc. to the flange pressure class)
Outlet Pressure Ranges Wd	0.1MPa～11MPa
Accuracy Class AC	±1%（AC1）， ±2.5%（AC2.5）， ±5%（AC5）
Closing Pressure Category SG	2.5%（SG 2.5）， 5%（SG5）， 10%（SG10）
Lock-up Pressure Zone SZ	2.5% （SZ2.5）
Min. Required Differential Pressure Between Inlet And Outlet Δp	0.5MPa
EX-protection / Protection Class	ExdIIBT4, IP65
Materials	Main valve body　　A105、A350 LF2 Pilot　　　　　　　 Aluminium alloy, Steel Internal parts　　　Steel, Aluminium, Brass Spring　　　　　　　X750, A276, 316 Sealings　　　　　　NBR,FKM,RPTFE

How the regulator works

Gas pressure regulator is a pressure control device in the pressure regulating system. The Diaphragm Unit (permanently connected to the sleeve) divides the Regulator into two rooms. One of the rooms is connected to outlet pressure, and the other to loading pressure produced by the pilot according to pressure downstream. Due to lack of pressure, the regulator spring acts on the diaphragm unit and closes the sleeve.

The sleeve moves to its open position when the force produced by loading pressure acting on the diaphragm unit becomes greater than the force produced by downstream regulated pressure added to the load of the regulator spring. The sleeve keep station when the two forces are equal under these conditions, downstream pressure is equal to the system’s set value.

Any change in requested flow-rate produces a variation in downstream regulated pressure and the regulator controlled by the pilot opens or closes to deliver the requested flow-rate while keeping downstream pressure uniform.