RD-17A type
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The pressure detector is a pressure reducing valve for high-pressure liquid with a piston structure, and can be used in places where the pressure difference between the front and back of the valve is large.
By adopting a pressure balance structure for the valve body, the fluctuation of the secondary side pressure due to the change of the primary side pressure is small.

specification

Product code RD17A-C □The symbol of the secondary adjustment pressure range is entered in □.
Valve type Pressure reducing valve
Nominal diameter 20-150 (3/4-6)
Applicable fluid Water / liquid
Fluid temperature We also manufacture 5 to 80 ° C (5 to 100 ° C for nominal diameters of 50 or less.Oils are 100 ℃ or less, and hot water is 90 ℃ or less. )
Fluid viscosity 700cSt or less
Primary side applied pressure 2.7MPa or less
Secondary adjustment pressure range (set pressure) L: 0.2 to 0.35MPa H: 0.3 to 0.7MPa
See applicable pressure selection diagram
Minimum differential pressure before and after the valve 0.05MPa
Deadline boost 0.05MPa or less
Allowable leakage amount None (visual pressure gauge)
offset 0.2-0.35MPa Spring: Within 0.15MPa
0.3-0.7MPa Spring: Within 0.2MPa
End connection JIS 10, 16, 20, 30K RF flangeWe also manufacture JIS 10, 16, 20K FF flanges and ASME / JPI class 150 flanges.
Mounting posture Upright mounting on horizontal piping
Material body SCPHWe also manufacture the wetted parts made of SUS.
Material Valve body SUS
Material Valve seat SUS
Material disc NBR
  • The material of the spring case differs from that of S25C, SGP, and STPG depending on the nominal diameter.
  • We also manufacture the RD-17N type (nominal diameter 100: secondary adjustment pressure range: 0.7 to 1.05 MPa) that conforms to the performance standards of the Waterworks Law.

Download materials

Download materials

Common to all product symbols

RD-17A Catalog

RD-17A Price List

RD-17A outline drawing

RD17A-C □

RD17A-C (125,150A) reference drawing

RD17A-C (20,25A) reference diagram

RD17A-C (32-65A) reference diagram

RD17A-C (80,100A) reference diagram

Frequently Asked Questions and Explanations

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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Notation on catalogs and websites

RD44N-F □

Contains characters that indicate pressure classification and options.

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