Constant water level valve, vacuum breaker, check valve, check valve CS-1USN type check valve (for water / hot water)
- Where to use
- housing complexDetached housesBuilding equipment
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.
- The valve body contains a synthetic rubber disc.
- Can be used for hot water up to 90 ° C.
- Water can be supplied with low pressure loss.
- Since the pipe end core can be attached, the generation of red water is prevented.
- Since the valve body has a cartridge structure, maintenance is easy.
- The noise when running water is 40 dB or less (at the rated flow rate), which is as low as piping.
Water Supply Law Performance Standard Certification Registered Product (F-62) Pressure Resistant Leach Backflow Prevention Durability
specification
| Product code | CS1USN-F |
|---|---|
| Valve type | Check valve |
| type | Single check valve |
| Nominal diameter | 20 (3/4) |
| Applicable fluid | Tap water / hot water |
| Fluid temperature | 5 to 90 ° C (5 to 40 ° C when using a tube end core) |
| Applicable pressure | 1.0MPa or less |
| Expansion and contraction amount | ─── |
| 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 D = 27.2 and the calculated value is 43.6 mm. |
| Valve body operability | 20kPa or less |
| Pressure loss | 20kPa or lessAt the inlet side hydraulic water pressure 0.15MPa and rated flow rate. |
| Rated flow rate | 38L / min |
| End connection | Entrance: JIS G1 (water tap) union nutFor the threads of the union joint on the inlet side, we also manufacture capital threads (φ33.1 x 14 threads). Exit: JIS R c3 / 4 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 | plastic |
| Material disc | EPDM |
- The CS-4N and CS-1USN types comply with the Japan Water Works Association standard "JWWA B129 Water Check Valve for Water Supply".
- We also manufacture the control type single check valve CS-7N type. (Refer to page 192.)
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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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