Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer RD-44N type Door-to-door water pressure reducing valve (for water / hot water)
When using a pressure reducing valve for door-to-door water supply
1. 1. Running water noise is reduced.
2. By installing a pressure reducing valve in each house, the variation in water supply pressure due to the difference in layers is eliminated.
3. 3. Due to the proper pressure, the water splash phenomenon is unlikely to occur. Reduce water hammer.
Four. During maintenance, it will not be affected by water outages.
Five. The mixing temperature is stable.
Such as, living performance is improved.
- Where to use
- housing complexHoteloffice building
Major features
- Uses chlorine water resistant EPDM.
- Hygienic structure without liquid pool.
- Reliable operation from low differential pressure to high differential pressure.
- Water pressure test is possible with the pressure reducing valve installed.
- Easy and simple new test gag method adopted.
Water Supply Law Performance Standard Certification Registered Product (E-157) Pressure Pressure Performance Leaching Performance Durability Performance
specification
| Product code | RD44N-F □Please refer to "How to represent product symbols" |
|---|---|
| Valve type | Pressure reducing valve for door-to-door water supply |
| Nominal diameter | 20 (3/4) |
| Applicable fluid | Tap water / hot water |
| Fluid temperature | 5 to 90 ° C (5 to 40 ° C when using tube end core) |
| Primary side applied pressure | 1.0MPa or less |
| Secondary adjustment pressure range (set pressure) | L: 0.05 to 0.12MPa (0.08MPa) M: 0.11 to 0.23MPa (0.20MPa) H: 0.20 to 0.30MPa (0.20,0.25MPa)If the set pressure exceeds 0.3MPa, please contact us.For other set pressures, refer to "How to represent product symbols". |
| Nameplate color | L: Green M: Blue H: Red |
| Maximum decompression ratio | 10: 1 |
| Minimum differential pressure before and after the valve | 0.02MPa |
| Rated flow rate | 50L / min (differential pressure 0.1MPa or more) |
| End connection | P (male union joint): JIS R3/4 thread (compatible with P/V core) B (female union joint): JIS Rc3/4 thread (built-in P/V movable core) C (male/female union joint): JIS R3/4 thread/JIS Rc3/4 thread (cores are the same as above) |
| Mounting posture | Horizontal / vertical freedom (excluding strainer cap upward) |
| accessories | Union fittings (pipes, nuts, gaskets), heat insulation cases (self-extinguishing properties), test gag, pressure gauge fittings (for secondary side, main body installed)The pressure gauge fitting can be used in combination with the opposite plug. |
| strainer | 60 mesh |
| Material body | CAC406 |
| Material diaphragm | Chlorine water resistant EPDM |
| Material disc | Chlorine water resistant EPDM |
- The pressure gauge is an optional item, and A type or D type can be selected. (The maximum scale of the pressure gauge is 0.5MPa.)
- For the nominal diameter 25, use the RD-47N type (see page 65).
- If it is equipped with a water stopcock, use the RD-45SN, 45SUN type (see page 58).
- For buried piping, use RD-46N type (see page 64).
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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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