RF-44N type
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RF-44N type is a decompression constant flow valve used in central hot water supply systems and water supply systems. The maximum flow rate can be regulated by simultaneously performing decompression control and constant flow rate control of the water supply / hot water supply line and allocating to the appropriate flow rate. As a result, in addition to improving living performance, it is easier to design and construct the system by grasping the capacity of each line, which saves water and energy.

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 RF44N-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: 0.05-0.12MPa (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
Set flow rate / symbol L: 9, 12, 15, 20, 25, 30 L / min
M / H: 9, 12, 15, 20, 25, 30, 35, 40 L / min
End connection P (male union fitting): JIS R3 / 4 screw (for both P and V)
B (female union fitting): JIS Rc3 / 4 screw (built-in movable core for both P and V)
C (male / female union fitting): JIS R3 / 4 thread / JIS Rc3 / 4 thread (core is 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.)
  • Model designation example: Secondary side set pressure 0.2MPa, set flow rate 40L / min is "RF-44N type M40P".
  • We also manufacture the RF-45SUN type with a water stopcock.

Download materials

Download materials

Common to all product symbols

RF-44N Catalog

RF-44N Price List

RF-44N type PB outline drawing

RF-44N outline drawing

RF-44N Instruction Manual

RF44N-F □

RF-44N union joint (Rc×Rc) reference drawing with core

RF-44N union joint (with Rc core x R) reference drawing

RF-44N union joint (R×R) reference drawing

Reference drawing of RF-44N union joint (with R×Rc core)

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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If you would like to contact us by phone, please contact VENN's sales office.

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Products with different symbols depending on the product specifications are indicated by □.
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Notation on catalogs and websites

RD44N-F □

Contains characters that indicate pressure classification and options.

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