Design Features:
Check Valves are the valves of stopping the fluid from backflow. The disc can be opened by the pressure of fluid. And then the fluid runs from the inlet to the outlet side. When the pressure of inlet is less than outlet, the disc can be cloased automatically and stop the fluid from backflow.
The swing check valve adopts a built-in rocker swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except for the sealing gasket and sealing ring at the middle flange, the whole There is no leakage point, preventing the possibility of valve leakage. The swing arm of the swing check valve adopts a spherical connection structure at the connection between the rocker arm and the valve flap, so that the valve flap has a certain degree of freedom within the range of 360 degrees, and there is an appropriate micro position compensation.
It is suitable for clean media, not for media containing solid particles and high viscosity.
ZG Check Valve Features:
1. Rational Structures, Reliable Sealing.The product structure is reasonable, the seal is reliable, and the performance is good.
2. Hard-alloy Seal, Long Life.The sealing surface is welded with hard alloy, which has good wear resistance and long service life.
Field of Application：
Size Range: 2"-20"/DN50-DN500
Temperature: （-）29℃ to 425℃
Allowable Operating Pressure:PN10/PN16/PN25/PN40/PN64
Check Valve for use inpetrochemical industry, Chemical,Fiber Textiles, plastic, paper making, power industry, steel, rubber and gas systems.
Technical Specification：
1.Design standard: GB/T 12235
2.Face to face: GB/T 12221
3.RF flange Ends: JB/T79 GB/T9113 HG/T9092
4.Inspect and test: GB/T13927 JB/T9092
5.Pressure-temp: GB9131
6.Medium: combustible, explosive, toxi fluid, heat-conducting oil and liquid.
MATERIAL LIST
| Part | Material |
| Body | WCB | CF8 | CF8M |
| Disc | WCB+13Cr/WCB+STL | CF8 | CF8M |
| Cap | WCB | CF8 | CF8M |
| Stem | F6a | F304 | F316 |
| Eyebolt Screw | B7
|
