Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer RC-47N type Door-to-door water pressure reducing valve / check valve (for water / hot water)
The RC-47N type is a pressure reducing valve that combines the RD-47N type with a check valve to prevent backflow from the equipment side to the main pipe side when water is cut off.
When using a pressure reducing valve for door-to-door water supply
1. 1. Running water noise is reduced.
2. Eliminates variations in water supply pressure due to height differences.
3. 3. Due to the proper pressure, the water splash phenomenon does not occur.
Four. During maintenance, the effect of water outage does not affect a wide area.
Five. The mixing temperature is stable.
Such as, living performance is improved.
- Where to use
- Large house
Major features
- Uses chlorine water resistant EPDM.
- Hygienic structure without liquid pool.
- Reliable operation from low differential pressure to high differential pressure.
- Easy and simple new test gag method adopted.
- Even after construction, the water pressure test can be performed with the pressure reducing valve installed.
- Maintenance is easy by adopting the cassette method.
- With a structure without caulking or welding, all parts can be recycled and sorted.
Water Supply Law Performance Standard Certification Registered Product (E-551) Pressure Pressure Performance Leaching Performance Backflow Prevention Performance Durability Performance
specification
| Product code | RC47N-FLPL1 | RC47N-FHPL6 |
|---|---|---|
| Valve type | Pressure reducing valve for door-to-door water supply | Pressure reducing valve for door-to-door water supply |
| type | Check valve for door-to-door water supply | Check valve for door-to-door water supply |
| Nominal diameter | 25 (1) | 25 (1) |
| Applicable fluid | Tap water / hot water | Tap water / hot water |
| Fluid temperature | 5 to 90 ° C (5 to 40 ° C when using tube end core) | 5 to 90 ° C (5 to 40 ° C when using tube end core) |
| Primary side applied pressure | 1.0MPa or less | 1.0MPa or less |
| Secondary adjustment pressure range (set pressure) | 0.05-0.13MPa (0.08MPa) | 0.12 to 0.35MPa (0.2MPa)We also manufacture set pressures of 0.15 and 0.25 MPa. ) |
| Nameplate color | Green | Red |
| Maximum decompression ratio | 10: 1 | 10: 1 |
| Minimum differential pressure before and after the valve | 0.025MPa | 0.025MPa |
| Rated flow rate | 55L / min (differential pressure 0.1MPa or more) | 65L / min (differential pressure 0.1MPa or more) |
| Check valve closing pressure | 3kPa or more | 3kPa or more |
| End connection | JIS R1 (Union fitting) | JIS R1 (Union fitting) |
| Mounting posture | Horizontal / vertical freedom (excluding strainer cap upward) | Horizontal / vertical freedom (excluding strainer cap upward) |
| accessories | Union fittings (pipes, nuts, gaskets)In the case of RC-47N type, a check valve is built in the union joint on the outlet side. (It will be delivered as a set of the main body and union joint.) , Heat insulation case (self-extinguishing property), test gag, joint for pressure gauge (for secondary side, main body already attached)The pressure gauge fitting can be used in combination with the opposite plug. | Union fittings (pipes, nuts, gaskets)In the case of RC-47N type, a check valve is built in the union joint on the outlet side. (It will be delivered as a set of the main body and union joint.) , Heat insulation case (self-extinguishing property), test gag, joint for pressure gauge (for secondary side, main body already attached)The pressure gauge fitting can be used in combination with the opposite plug. |
| strainer | Equivalent to 40 mesh | Equivalent to 40 mesh |
| Material body | CAC911 | CAC911 |
| Material diaphragm | Chlorine water resistant EPDM | Chlorine water resistant EPDM |
| Material disc | Chlorine water resistant EPDM | Chlorine water resistant EPDM |
- The pressure gauge is an optional item, and A type or D type can be selected. (Refer to page 60 for the pressure gauge.)
- For nominal diameter 20, use RD-44N, 44SN, 45SN type (see pages 52, 57, 58) or RC-44N, 45SUN type (see pages 54, 58).
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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.
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