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" | ||
