Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer RD-11 type pressure reducing valve (for water)
- Where to use
- Upland irrigation
specification
Product code | RD11-B □The symbol of the secondary adjustment pressure range is entered in □. |
---|---|
Valve type | Pressure reducing valve |
Nominal diameter | 20-150 (3/4-6) |
Applicable fluid | Fresh water, industrial water, agricultural water |
Fluid temperature | 5-60 ℃ |
Primary side applied pressure | 1.0MPa or lessWhen the end connection is a sluice valve flange for water supply, the applied pressure on the primary side is 0.75 MPa or less. |
Secondary adjustment pressure range (set pressure) | Nominal diameter 20-80 L: 0.05-0.1, M: 0.1-0.25, H: 0.25-0.35, S: 0.35-0.5MPaFor nominal diameters of 20 to 80, we also manufacture a secondary adjustment pressure range of 0.5 to 0.8 MPa. Nominal diameter 100-150 L: 0.05-0.1, M: 0.1-0.25, H: 0.25-0.4, S: 0.4-0.45, V: 0.45-0.5MPa |
Maximum decompression ratio | 10: 1 |
Minimum differential pressure before and after the valve | 0.05MPa |
Deadline boost | 0.025MPa or less |
Allowable leakage amount | None (visual pressure gauge) |
Minimum adjustable flow rate | 2-5 L / min |
End connection | JIS 10K RF flanges (nominal diameters 100 to 150 are also manufactured for water sluice valve flanges.When the end connection is a sluice valve flange for water supply, the applied pressure on the primary side is 0.75 MPa or less. ) |
Mounting posture | Horizontal / vertical freedomWhen installing in vertical piping, keep the nominal diameter up to 80 and allow a large maintenance space. If the nominal diameter is 100 or more, install it upright on the horizontal pipe. |
Material body | FC |
Material diaphragm | NBR |
Material disc | NBR |
Material parts | CAC406, SUS |
- We also manufacture a pressure gauge with a connection hole on the side of the main body (nominal diameter 80 or less: JIS Rc1 / 4 screw, nominal diameter 100 or more: JIS Rc3 / 8 screw), or a pressure gauge with a pressure gauge attached to it. I am. (The maximum scale of the pressure gauge is 1.6MPa on the primary side, adjustment pressure range L, M (0.6MPa), H to V (1.6MPa) on the secondary side.)
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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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