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Self-actuating Differential Pressure Control Valve

HG8302 series self actuating differential pressure control valve is composed of a control valve, an actuator and a spring with set pressure. It is designed for differential pressure control in non-corrosive liquid, steam and gas pipelines. When the differential pressure exceeds the preset limit, the control valve will close automatically.

The differential pressure control valve has pressure balancing function and feature quick response, low noise, reliable performance, and maintenance free. It employs modular design. Through integrating with other functional units, it can be used for various control purposes.

The self actuating differential pressure control valve supports adjustment of differential pressure setting through the adjusting screw nut.

Nominal diameter DN15, 20, 25, 32, 40, 50, 65, 80, 100, 125, 150, 200, 250mm
Nominal pressure PN16, PN40
Flange standard HG20592-2009, ANSI, JIS, DIN, GB, JB
Valve body material Cast iron, cast steel, cast stainless steel
Valve core material Rigid seal Stainless steel
Flexible seal Rubber ring coated stainless steel
Pressure balancing system Stainless steel bellows (DN15-DN125), balancing diaphragm (DN150-250)
Effective area (m2) 80 250 630
Pressure setting range ( MPa ) 0.1-0.6 0.015-0.15 0.005-0.035
0.05-0.3 0.01-0.07
Min. differential pressure that allows the valve to work normally ( △ Pmin ) ( MPa ) ≥ 0.04 ≥0.01 ≥0.005
Max. differential pressure between the upper and lower chambers ( MPa ) 1.25 0.4 0.15
Material Diaphragm cover: galvanized steel plate
Diaphragm: EPDM or fiber reinforced FKM
Control tube and connectors Copper tube or steel tube 10 × 1;
Ferrule connector R 1/4"
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