Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer WVMR-02N type pressure-retaining pressure reducing valve (for water / hot water)
Also, when the pressure drops below the primary adjustment pressure, the valve closes, stopping water supply and maintaining the pressure on the primary side of the valve.
It is mainly installed during the lead-in from the city water main to the water tank of large consumers. When the main pressure is low, the main pressure will be even lower when a large consumer starts supplying water, and water may not be available in ordinary households in the vicinity. To prevent this, it is used in systems that store water when the main pressure is high and use the stored water when the main pressure is low.
- Where to use
- Building equipmentFactory equipment
Major features
- Stable operation can be easily obtained by adjusting the sensitivity by adjusting the needle valve opening according to the usage conditions.
- The basic valve and pilot valve can be easily disassembled for easy adjustment, repair and parts replacement.
- The lift limiting mechanism can limit the overflow.
Water Supply Law Performance Standard Certification Registered Product (E-241) Pressure Pressure Performance Leaching Performance Durability Performance
specification
| Product code | WVMR02N-B ○ □The symbol of the primary adjustment pressure range is entered in ○, and the symbol of the secondary adjustment pressure range is entered in □. |
|---|---|
| Valve type | Pressure reducing valve |
| Nominal diameter | 80-200 (3-8) |
| Applicable fluid | Water / hot waterWhen using it for a water supply device, use WVMR-02N type, which conforms to the performance standards of the Waterworks Law. |
| Fluid temperature | 5-60 ℃ |
| Primary side applied pressure | 0.75MPa or lessIn the case of JIS 10K flange, the applied pressure on the primary side is 1.0MPa or less. The adjustment pressure range on the primary and secondary sides is 1.0MPa and 0.95MPa or less. |
| Primary adjustment pressure range | L: 0.05-0.35MPa, H: 0.3-0.75MPaIn the case of JIS 10K flange, the applied pressure on the primary side is 1.0MPa or less. The adjustment pressure range on the primary and secondary sides is 1.0MPa and 0.95MPa or less. |
| Secondary adjustment pressure range (set pressure) | L: 0.05-0.35MPa, H: 0.3-0.7MPaIn the case of JIS 10K flange, the applied pressure on the primary side is 1.0MPa or less. The adjustment pressure range on the primary and secondary sides is 1.0MPa and 0.95MPa or less. |
| Maximum decompression ratio | 10: 1 |
| Minimum differential pressure before and after the valve | 0.05MPa |
| offset | Secondary side adjustment pressure 0.05 to 0.35 MPa ‥ 0.08 MPa or less Secondary side adjustment pressure 0.3 to 0.7 MPa ‥ 0.1 MPa or less |
| End connection | Water sluice valve flange or JIS 10K RF flange |
| Mounting posture | Upright mounting on horizontal piping |
| accessories | Pressure gauges on both the primary and secondary sidesThe maximum scale of the pressure gauge is 1.6MPa on the primary side and the adjustment pressure range L (0.6MPa) and H (1.6MPa) on the secondary side. |
| Basic valve material body | FC |
| Basic valve material Main part Valve seat | CAC406 |
| Basic valve material Main part Diaphragm | NBR |
| Basic valve material Main part disc | NBR |
| Basic valve painting inner surface | Liquid epoxy resin for water supply |
- Please refer to page 84 for the nominal diameter selection chart.
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Frequently Asked Questions and Explanations
What is the useful life (the number of years recommended for replacement)?
The useful life of the main unit is about 8 years, but it depends on the usage conditions and environment.
Is it possible to reduce the hydrostatic pressure (without flowing water)?
When no water is flowing (flow rate 0), the valve is closed and the secondary side holds the set pressure.
What happens if the minimum flow rate or minimum differential pressure is exceeded?
If the conditions are outside the specified range, control will be lost and operation will become unstable.
Inquiries about this product
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