Constant water level valve, vacuum breaker, check valve, check valve WVL-02 type constant water level valve (for water)
specification
| Product code | WVL02-B | WVL02-L |
|---|---|---|
| Valve type | Constant water level valve | Constant water level valve |
| type | For general use | For general use |
| Nominal diameter | 80-400 (3-16) | 80-200 (3-8) |
| Applicable fluid | waterWhen using it for a water supply device, use WVL-02N type, WVL-02PN type, WVL-02CN type, which are compliant with the performance standards of the Waterworks Law. | waterWhen using it for a water supply device, use WVL-02N type, WVL-02PN type, WVL-02CN type, which are compliant with the performance standards of the Waterworks Law. |
| Fluid temperature | 5-60 ℃ | 5-60 ℃ |
| Applicable pressure | Nominal diameter 200 or less: 0.03 to 0.75MPa, Nominal diameter 250 or more: 0.05 to 0.75MPa | Nominal diameter 200 or less: 0.03 to 0.75MPa, Nominal diameter 250 or more: 0.05 to 0.75MPa |
| Minimum differential pressure before and after the valve | Nominal diameter 200 or less: 0.03MPa, Nominal diameter 250 or more: 0.05MPa | Nominal diameter 200 or less: 0.03MPa, Nominal diameter 250 or more: 0.05MPa |
| End connection | JIS 10K RF flange or sluice valve flange for water supply | JIS 10K RF flange or sluice valve flange for water supply |
| Mounting posture | Upright mounting on horizontal piping | Upright mounting on horizontal piping |
| Attached ball tap | Body nominal diameter 200 or less: Nominal diameter 20 (with poly ball sand)The ball tap (LB-2N type, nominal diameter 20) is also sold separately. Please refer to page 188. Body nominal diameter 250 or more: Nominal diameter 25 (with poly ball sand) | Body nominal diameter 200 or less: Nominal diameter 20 (with poly ball sand)The ball tap (LB-2N type, nominal diameter 20) is also sold separately. Please refer to page 188. Body nominal diameter 250 or more: Nominal diameter 25 (with poly ball sand) |
| Basic valve material body | FC | FCD |
| Basic valve material Main part Diaphragm disc | Synthetic rubber | Synthetic rubber |
| Basic valve material Main part Valve seat | CAC406 | CAC406 |
- We also manufacture WVL-02PN type (main body inner and outer surface epoxy resin powder coating) and WVL-02N type (main body inner surface water supply liquid epoxy resin coating) that conform to the performance standards of the Waterworks Law (main body FC, nominal diameter 80-200). I have.
- Please refer to page 157 for the nominal diameter selection chart.
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Frequently Asked Questions and Explanations
What kind of failure (complaint) does the constant water level valve have?
Please check the details.
Why do you use solenoid valves and ball taps together for pilot piping?
When using a solenoid valve, the water level is detected by the liquid level switch, and the main valve is opened and closed by the operation of the pilot solenoid valve to control the water level.
Is the flow rate adjustment mechanism of the constant water level valve a constant flow valve?
It is not a constant flow valve. The purpose is to regulate the maximum flow rate to prevent the water pressure drop in the water pipes during the daytime when tap water is in high demand.
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