Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer RD-50SRHN type water pressure reducing valve
Major features
- Durability is improved by adopting chlorine water resistant EPDM. (RD-50SN type series)
- Vertical and horizontal piping is possible. (Excluding strainer cap upward)
specification
| Product code | RD50SRHN-F |
|---|---|
| Valve type | Pressure reducing valve for water supply |
| Use | For cold regions |
| type | For 170kPa |
| Nominal diameter | 20 (3/4) |
| Applicable fluid | Tap water |
| Fluid temperature | 5 to 55 ° C |
| Primary side applied pressure | 750kPa or less |
| Face-to-face dimensions | 115mm |
| Secondary adjustment pressure range (set pressure) | 170kPaPlease contact us for pressures other than the standard set pressure. (It is not a JIS certified product.) |
| Open flow rate | 30L / min or moreThe open flow rate is the flow rate when the primary side pressure is held at 100 kPa and the secondary side is opened. |
| Attached mechanism | Reverse stop mechanism, negative pressure operation mechanism, strainer (60 mesh) drain plug (RD-25SRN, 50SRN, 50SRHN type) |
| Closing pressure of reverse stop mechanism | 3kPa or more |
| Opening pressure of negative pressure operating mechanism | -55kPa or less |
| Closed operating pressure of negative pressure operating mechanism | 50kPa or less |
| End connection | JIS R c3 / 4 screw |
| Mounting posture | Horizontal / vertical freedom (excluding strainer cap upward) |
| accessories | Insulation caseThe RD-50SN type series is chlorine water resistant EPDM, and the heat insulation case is self-extinguishing. |
| Material body | CAC406 |
| Material diaphragm | NBRThe RD-50SN type series is chlorine water resistant EPDM, and the heat insulation case is self-extinguishing. |
| Material disc | NBRThe RD-50SN type series is chlorine water resistant EPDM, and the heat insulation case is self-extinguishing. |
- The face-to-face dimensions differ between the RD-25SN type series and the RD-50SN type series.
- The pressure reducing valve for door-to-door water supply is the Benkei series. (Refer to pages 50-66.)
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Frequently Asked Questions and Explanations
What is the useful life (the number of years recommended for replacement)?
The service life of pressure reducing valves for door-to-door water supply is 8 years after regular inspections, maintenance, and replacement of consumable parts, but this may vary depending on usage conditions.
Does the pressure reducing valve generate noise due to deterioration over time?
Noise tends to be higher due to disc damage (bite) and benza damage over time.
Is it necessary to install a pressure reducing valve for water supply for each house in all the units of an apartment house?
Not all units have it. It is not necessary to install it if the water pressure is not high on the upper floors.
Inquiries about this product
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