Wafer Check Valve
The valve is composed of valve body, disc, stem, spring and other parts, which are connected by clamp. Due to the short closing stroke of thedisc and the spring loading, the water hammer phenomenon can be significantly reduced. It is mainly applicable to the water supply and dra-inage pipe network of urban, industrial and high-rise buildings and other non corrosive medium pipes to prevent the unidirectional opening and closing of medium reverse flow.
1. Thin and lightweight design, short disc closing stroke, spring function can accelerate closing effect, reduce water hammer and water hammer sound.
2. The distance between the surfaces is shorter than that of the general non-return valve,which is the most convenient for places with limited installation space.
3. Small volume, light weight, compact structure, easy maintenance.
4. It can be installed on the pipeline horizontally or vertically. When it is installed on the horizontal pipeline, the valve axis shall be vertical tothe water surface. When it is installed on the vertical pipeline, the direction of the fluid shall be from the bottom to the top.
Main Technical Parameters
| Test pressure |
PN10 |
Shell: 1.5MPa Seal: 1.1MPa | |
|---|---|---|---|
|
PN16 |
Shell: 2.4MPa Seal: 1.76MPa | ||
| Applicable temperature |
0℃~80℃ |
||
| Surface treatment |
Epoxy powder coating, 150-500um, according to AWWA C550 standard. |
||
| Application range |
Pipes for drinking water, water supply and drainage, sewage treatment, irrigation, air conditioning, fire fighting, etc. shall prevent medium backflow and eliminate water hammer noise. |
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Material of Main Parts
| No. | Component | Material |
|---|---|---|
|
01 |
Body |
Ductile iron GGG50 |
|
02 |
Plate |
Ductile iron plating GGG50 or stainless steel |
|
03 |
Shaft |
Stainless steel 304 |
|
04 |
Spring |
Stainless steel 304 |
|
05 |
Rubber seat |
EPDM or NBR |
Optional: Ductile iron valve plate or stainless steel 304 valve plate.