8 Inch Valve

8 Inch Valve

8-inch valve also uses gate and butterfly valves as the most common shutoff valves, but hydraulic control valves also play a vital role in regulating pressure and flow. Pressure relief/sustaining hydraulically operated control valve that can fulfill either of two separate functions: When installing in-line, it sustains minimum pre-set, upstream (back) pressure regardless of fluctuating flow or varying downstream pressure. When installed as a "branched from the line" circulation valve it relieves excessive line pressure when above maximum pre-set. ZhengFeng Control valves are hydraulically operated, simple and reliable, globe valves with full-bore hydrodynamic body providing an unobstructed flow path and superior performance. The valves balanced rolling-diaphragm assembly is vulcanized with a rugged radial seal disk construction, performing as the valves only moving part.

8 Inch Water Valve Products:




ZhengFeng pressure relief valve has the following characteristics:

1. High-quality construction materials ensure reliable, long-lasting operation;
2. Full bore valve port area and hydrodynamic body ensure unobstructed flow path; minimal pressure loss with low cavitation damage;
3. Fully supported and balanced rolling diaphragm – low actuation pressure and excellent low flow regulation performance;
4. Ensured operation after long standby periods;
5. Straightforward three major components design – easy and simple on-site inline maintenance with minimal downtime;
6. 2-way pilot and control loop, continuously sensing the downstream pressure and controlling the valve accordingly. Providing stable, reliable and accurate pressure modulation in a wide range of flow-rates and varying pressure levels;
7. Pressure modulation by the line pressure hydraulic force, no external power source is needed;
8. Pilot and control loop constructed from heavy-duty environment-friendly materials for long-lasting and reliable operation.
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