RD-37F type
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This is a [calm] series in which the main body, main part, and spring case of the water pressure reducing valve [calm] are made of stainless steel.
With improved controllability, reliability, and corrosion resistance, it can be used in plants.

Major features

  • The spring and spring case are also made of SUS and have excellent corrosion resistance.
  • It is a low noise design.
  • Even if the diaphragm is damaged, water will not leak to the outside.
  • The mounting posture is free.
  • The pressure gauge can be attached directly to the main body. (Secondary side only)

specification

Product code RD37F-D □The symbol of the secondary adjustment pressure range is entered in □.
Valve type Pressure reducing valve
type For 1.0MPa or less
Nominal diameter 25-50 (1-2)
Applicable fluid Water, hot water, or liquid that does not corrode materials (air)When used in a dry air pneumatic system with an oil-free compressor (turbo compressor or positive displacement compressor (rotary oil-free type)), rubber parts may deteriorate significantly in a short time (ozone cracks occur). ). Please contact us if you want to install it in such a place.・ Inert gas)
Fluid temperature 5 to 90 ° C
Primary side applied pressure 1.0MPa or less
Secondary adjustment pressure range (set pressure) L: 0.05-0.35MPa, H: 0.3-0.7MPaFor the RD-38F type with a nominal diameter of 40 to 50, we also manufacture JIS 20K RF flanges with a primary side applicable pressure of 2.0MPa or less and end connection.
Maximum decompression ratio 10: 1
Minimum differential pressure before and after the valve 0.05MPa
Allowable leakage amount None (visual pressure gauge)
End connection JIS 10K FF
Flange
Mounting posture Horizontal / vertical freedomWhen installing in vertical piping, leave a large maintenance space.
Material body SCS
Material diaphragm NBR
Material disc NBR
Material parts SUS
Material Spring case SUS
  • We also manufacture a pressure gauge attachment only on the secondary side. (The maximum scale of the pressure gauge is the secondary adjustment pressure range L (0.6MPa) and H (1.6MPa).)
  • For the RD-37,37F type, we also manufacture the RD-37T, 37FT type, which is compatible with temporary cleaning steam (maximum operating temperature of 130 ° C) in beer and drinking water factories.

Download materials

Download materials

Common to all product symbols

RD-37F Catalog

RD-37F Price list

RD-37F outline drawing

RD-37F Instruction Manual

RD37F-D □

RD37F-D reference diagram

Frequently Asked Questions and Explanations

Please tell me how to adjust the pressure. (There is a video in the answer details)

Please see the video of the pressure adjustment method from the answer details.

What is the useful life (the number of years recommended for replacement)?

The useful life of the main unit is about 8 years, but it depends on the usage conditions and environment.

Is it possible to reduce the hydrostatic pressure (without flowing water)?

When no water is flowing (flow rate 0), the valve is closed and the secondary side holds the set pressure.

What happens if the minimum flow rate or minimum differential pressure is exceeded?

If the conditions are outside the specified range, control will be lost and operation will become unstable.

Inquiries about this product

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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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