Pressure Sustaining and Relief Valve is a hydraulically driven automatic control valve,mainly has the following two functions: When used for pressure holding,regardless of fluctuations and changes in flow rate and downstream pressure, this valve can maintain the preset minimum upstream pressure (back pressure) when opened. When used for pressure relief, the valve can discharge excess system pressure that exceeds the preset maximum value. Mainly used for building water supply, fire water, industrial water and other occasions.
1. High safety and reliability, with fast closing, slow closing and energy absorption three measures to eliminate water hammer.
2. Valve body adopts full diameter design, in line with the principle of fluid dynamics, no barrier flow channel, small head loss.
3. No need for professional debugging, valve action is not affected by pump head and flow changes, a wide range of adaptation.
4. Basically no maintenance, long life.
5. Energy saving effect is obvious, using the pressure of the inlet end into the lower cavity of the diaphragm to support the weight of the diaphragm, pressure plate and the valve stem, and the resistance loss is small.
