Circuit valve, primary pressure regulating valve WVM-02 type primary pressure regulating valve (for water)
This is a large-capacity primary pressure control valve that releases an excessive amount of pressure at the desired pressure due to load fluctuations in pipes and circuits such as air conditioning and sanitary equipment, and keeps the pressure on the primary side of the valve constant.
- Where to use
- Pump reliefPressure tank / piping
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 maintenance such as adjustment, repair, and parts replacement.
- The lift limiting mechanism can limit the overflow.
specification
| Product code | WVM02-B □The symbol of the set pressure adjustment range is entered in □. | WVM02-L □The symbol of the set pressure adjustment range is entered in □. |
|---|---|---|
| Valve type | Primary pressure control valve | Primary pressure control valve |
| Use | Goods | Goods |
| Nominal diameter | 50-400 (2-16) | 40-200 (1 1/2-8) |
| Applicable fluid | Water / hot waterWhen using it for a water supply device, please use WVM-02N type, WVM-02PN type, WVM-02CN type, which are compliant with the performance standards of the Waterworks Law. | Water / hot waterWhen using it for a water supply device, please use WVM-02N type, WVM-02PN type, WVM-02CN type, which are compliant with the performance standards of the Waterworks Law. |
| Fluid temperature | 5-60 ℃ | 5-60 ℃ |
| Primary side applied pressure | 1.0MPa or lessFor nominal diameters of 200 or less, we also manufacture primary side applicable pressure of 1.6MPa or less (JIS 16K RF flange, set pressure adjustment range of 0.5 to 1.6MPa). (If the main body is made of FC, it does not meet the performance standards of the Waterworks Law.) | 1.0MPa or lessFor nominal diameters of 200 or less, we also manufacture primary side applicable pressure of 1.6MPa or less (JIS 16K RF flange, set pressure adjustment range of 0.5 to 1.6MPa). (If the main body is made of FC, it does not meet the performance standards of the Waterworks Law.) |
| Set pressure adjustment range | Nominal diameter 200 or less L: 0.05 to 0.35MPa, M: 0.3 to 1.0MPaThe set pressure adjustment range for nominal diameters 40 and 50 is 0.5 to 1.0 MPa, and the product symbols are WVM02-B (main unit FC) and WVM02-L (main unit FCD). Nominal diameter 250 or more L: 0.05 to 0.35MPa, M: 0.3 to 0.7MPa | Nominal diameter 200 or less L: 0.05 to 0.35MPa, M: 0.3 to 1.0MPaThe set pressure adjustment range for nominal diameters 40 and 50 is 0.5 to 1.0 MPa, and the product symbols are WVM02-B (main unit FC) and WVM02-L (main unit FCD). Nominal diameter 250 or more L: 0.05 to 0.35MPa, M: 0.3 to 0.7MPa |
| Blow-down pressure | Set pressure adjustment range 0.05 to 0.35MPa: Set pressure x 20% or less (minimum value 0.03MPa) Set pressure adjustment range 0.3 to 0.7, 0.3 to 1.0 MPa: Set pressure x 15% or less | Set pressure adjustment range 0.05 to 0.35MPa: Set pressure x 20% or less (minimum value 0.03MPa) Set pressure adjustment range 0.3 to 0.7, 0.3 to 1.0 MPa: Set pressure x 15% or less |
| Accumulation | Set pressure x 10% or less (minimum value 0.03MPa) | Set pressure x 10% or less (minimum value 0.03MPa) |
| End connection | JIS 10K RF flangeFor nominal diameters of 200 or less, we also manufacture primary side applicable pressure of 1.6MPa or less (JIS 16K RF flange, set pressure adjustment range of 0.5 to 1.6MPa). (If the main body is made of FC, it does not meet the performance standards of the Waterworks Law.) We also manufacture sluice valve flanges for waterworks (primary side applicable pressure 0.75 MPa or less, pressure resistance test 1.75 MPa, nominal diameter 80 or more). | JIS 10K RF flangeFor nominal diameters of 200 or less, we also manufacture primary side applicable pressure of 1.6MPa or less (JIS 16K RF flange, set pressure adjustment range of 0.5 to 1.6MPa). (If the main body is made of FC, it does not meet the performance standards of the Waterworks Law.) We also manufacture sluice valve flanges for waterworks (primary side applicable pressure 0.75 MPa or less, pressure resistance test 1.75 MPa, nominal diameter 80 or more). |
| Pressure resistance test (water pressure) | 1.5MPa | 1.5MPa |
| Mounting posture | Horizontal / verticalWhen installing in vertical piping, leave a large maintenance space. (However, if the nominal diameter is 250 or more, it is mounted upright on the horizontal pipe) | Horizontal / verticalWhen installing in vertical piping, leave a large maintenance space. (However, if the nominal diameter is 250 or more, it is mounted upright on the horizontal pipe) |
| Basic valve material body | FC | FCD |
| Basic valve material Main part Diaphragm disc | NBR | NBR |
| Basic valve material Main part Valve seat | CAC406 | CAC406 |
| Basic valve painting inner surface | Liquid epoxy resin for water supply | Liquid epoxy resin for water supply |
| Basic valve painting outer surface | ─ | ─ |
- We also manufacture WVM-02PN type (main body inner and outer surface epoxy resin powder coating) and WVM-02N type (main body inner surface water supply liquid epoxy resin coating) that conform to the performance standards of the Waterworks Law (main body material FC, nominal diameter 80-200). doing.
- We also manufacture one with a pressure gauge. (The maximum scale of the pressure gauge is the set pressure adjustment range L (0.6MPa), M (1.6MPa).)
- Please refer to page 157 of the general catalog for the nominal diameter selection chart and page 175 for the piping example diagram.
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Frequently Asked Questions and Explanations
What is the purpose of the primary pressure control valve installed on the outlet side of the pump?
It is used to prevent overheating due to shutoff operation of the pump and to keep the pump discharge pressure constant.
What is a back pressure valve?
Refers to the primary pressure control valve. A regulating valve that discharges fluid in response to changes in the force on the primary side in order to maintain the fluid pressure on the primary side at a certain constant pressure.
What is the purpose of the water fall prevention valve?
Please check the details.
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