Pressure reducing valve (for water / liquid / door-to-door water supply), constant flow valve, water hammer preventer RD-44SN type Door-to-door water supply pressure reducing valve <water stopcock separation type> (for water / hot water)
- Where to use
- Hotelhousing complex
Major features
- Since the water stopcock is a separable type, it is easy to install, and it is easy to replace the pressure reducing valve after piping and maintain the water supply equipment.
- 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 | RD44SN-FHL3 | RD44SN-FLL1 | RD44SN-FML2 |
|---|---|---|---|
| Valve type | Pressure reducing valve for door-to-door water supply | Pressure reducing valve for door-to-door water supply | Pressure reducing valve for door-to-door water supply |
| Nominal diameter | 20 (3/4) | 20 (3/4) | 20 (3/4) |
| Applicable fluid | Tap water / hot waterThe hot water identification cap is ordered separately and packed separately. | Tap water / hot waterThe hot water identification cap is ordered separately and packed separately. | Tap water / hot waterThe hot water identification cap is ordered separately and packed separately. |
| 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) | 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 | 1.0MPa or less |
| Secondary adjustment pressure range (set pressure) | 0.20-0.30MPa (0.25MPa) | 0.05-0.12MPa (0.08MPa) | 0.11 to 0.23MPa (0.20MPa) |
| Name sticker color | Red | Green | Blue |
| Maximum decompression ratio | 10: 1 | 10: 1 | 10: 1 |
| Minimum differential pressure before and after the valve | 0.02MPa | 0.02MPa | 0.02MPa |
| Rated flow rate | 50L / min (differential pressure 0.1MPa or more) | 50L / min (differential pressure 0.1MPa or more) | 50L / min (differential pressure 0.1MPa or more) |
| End connection | Entrance side: JIS Rc3 / 4 screwWe also manufacture with a tube end core. See page 60. Exit side: JIS G screwBe sure to use a male union fitting (R3 / 4) or a female union fitting (Rc3 / 4) on the secondary side. It will be ordered separately and packed separately. | Entrance side: JIS Rc3 / 4 screwWe also manufacture with a tube end core. See page 60. Exit side: JIS G screwBe sure to use a male union fitting (R3 / 4) or a female union fitting (Rc3 / 4) on the secondary side. It will be ordered separately and packed separately. | Entrance side: JIS Rc3 / 4 screwWe also manufacture with a tube end core. See page 60. Exit side: JIS G screwBe sure to use a male union fitting (R3 / 4) or a female union fitting (Rc3 / 4) on the secondary side. It will be ordered separately and packed separately. |
| Mounting posture | Horizontal / vertical freedom | Horizontal / vertical freedom | Horizontal / vertical freedom |
| accessories | Heat insulation case for pressure reducing valve (self-extinguishing property), test gag, pressure gauge joint (secondary side, main body installedThe pressure gauge fitting can be used in combination with the opposite plug. ) | Heat insulation case for pressure reducing valve (self-extinguishing property), test gag, pressure gauge joint (secondary side, main body installedThe pressure gauge fitting can be used in combination with the opposite plug. ) | Heat insulation case for pressure reducing valve (self-extinguishing property), test gag, pressure gauge joint (secondary side, main body installedThe pressure gauge fitting can be used in combination with the opposite plug. ) |
| strainer | 60 mesh | 60 mesh | 60 mesh |
| Material Pressure reducing valve body | CAC | CAC | CAC |
| Material Pressure reducing valve diaphragm | Chlorine water resistant EPDM | Chlorine water resistant EPDM | Chlorine water resistant EPDM |
| Material Pressure reducing valve disc | Chlorine water resistant EPDM | Chlorine water resistant EPDM | Chlorine water resistant EPDM |
| Material Water stop ball | CAC plating process | CAC plating process | CAC plating process |
- The pressure gauge can be selected from A type or D type as an option. It will be ordered separately and packed separately. (The maximum scale of the pressure gauge is 0.5MPa.)
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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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