Constant water level valve, vacuum breaker, check valve, check valve CS-2SSN type double check valve (for water)
Major features
- It is a spring system that closes the valve before backflow when there is back pressure or water outage, so it is highly safe and prevents water hammer.
- Maintenance can be easily performed without removing the check valve from the piping.
- By providing an inspection hole, you can easily check the function.
- Since the pipe end core can be attached, the generation of red water is prevented.
Water Supply Law Performance Standard Certification Registered Product (F-113) Pressure Resistant Leach Backflow Prevention Durability
specification
| Product code | CS2SSN-F |
|---|---|
| Valve type | Check valve |
| type | Double check valve |
| Nominal diameter | 20-50 (3/4-2) |
| Applicable fluid | Tap water |
| Fluid temperature | 5 to 60 ° C (5 to 40 ° C when using a tube end core) |
| Applicable pressure | 1.0MPa or lessAbout 0.03MPa is required as the minimum differential pressure for valve opening. |
| Backflow prevention pressure | (1/2 x D + 30 mm) water level ~ 1.5 MPa D: Piping outer diameter mmIn the example of nominal diameter 20, (1/2 x D + 30 mm) is calculated as 43.6 mm with D = 27.2. |
| Valve body operability | 40kPa or less |
| Pressure loss | 40 kPa or less at the reference flow rateThe water pressure on the inlet side is 0.15MPa and the standard flow rate. (If a pipe end core is used, the pressure loss will increase.) |
| Reference flow rate Flow rate | Nominal diameter 20: 38L / min Nominal diameter 25: 60L / min Nominal diameter 32: 85L / min Nominal diameter 40: 150L / min Nominal diameter 50: 240L / min |
| End connection | JIS Rc screwA pipe end core can be attached to the threaded part. Tube end core: We also manufacture products with a built-in movable core for both P and V. |
| Mounting posture | Free (applies to the flow direction from bottom to top in the case of vertical piping) |
| Material body | CAC406 |
| Material parts | Synthetic resin CAC406 |
| Material disc | Chlorine water resistant EPDM |
- It complies with the Japan Water Works Association standard "JWWA B129 check valve for water supply".
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Frequently Asked Questions and Explanations
What is the purpose of the check valve?
The check valve is used to prevent backflow due to back pressure, which is higher on the outlet side than on the inlet side.
What is a double check (valve)?
A normal check valve has one valve to prevent backflow, but it is equipped with two valves to improve safety.
What is the operability of the valve body?
Refers to the release pressure of the valve body. It is listed as a performance item of the Japan Water Works Association standard "JWWA B129 check valve for water supply".
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