DIN Silencing Check Valve
The function of the valve is to prevent the flow in the opposite direction and only allow the medium to flow in one direction. Usually, the valve works automatically. Under the action of fluid pressure flowing in one direction, the valve disc opens; when the fluid flows in the opposite direction, the fluid pressure and the self weight of the valve disc act on the valve seat to cut off the flow. It is not suitable for medium with solid particles and high viscosity.
1. Short shutoff stroke of valve core, combined with the closed design of spring speed, can effectively reduce the influence of water hammer.
2. Before the water hammer strikes, the valve has been closed to achieve the mute effect.
3. Full flow design, water loss is very low.
4. Because the use of both ends of the disc guide design, can be applied to any direction of installation.
Main Technical Parameters
| Test pressure |
PN10 |
Shell: 1.5MPa Seal: 1.1MPa | |
|---|---|---|---|
|
PN16 |
Shell: 2.4MPa Seal: 1.76MPa | ||
|
PN25 |
Shell: 3.75MPa Seal: 2.75MPa | ||
| Applicable temperature |
0℃~80℃ |
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| Connection end |
Flange: EN 1092-2 |
||
| Surface treatment |
Epoxy powder coating, 150-500um, according to AWWA C550 standard. |
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| 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 |
Shaft |
Stainless steel 304 |
|
03 |
Spring |
Stainless steel 304 |
|
04 |
Hexagonal nut |
Stainless steel 304 |
|
05 |
Disc |
Ductile iron is copper or brass plated |
|
06 |
Seat |
Ductile iron is copper or brass plated |
|
07 |
O-Ring |
NBR or EPDM |