RD-41F type
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specification

Product code RD41F-D □The symbol of the secondary adjustment pressure range is entered in □.
type Stainless steel, flange
Nominal diameter 15-25 (1/2-1)
Applicable fluid steam
Fluid temperature 220 ℃ or less
Primary side applied pressure 1.0MPa or lessWe also manufacture products with a primary pressure applied of 1.6 MPa or less. (RD-41F type has JIS 16K RF flange.)
Secondary adjustment pressure range (Color of name plate / spring) L: 0.02 to 0.25MPa (green), M: 0.2 to 0.4MPa (blue), H: 0.35 to 0.8MPa (red)
Maximum decompression ratio 20: 1
Minimum differential pressure before and after the valve 0.02MPa
Deadline boost 0.02MPa or less
offset Set pressure x 0.5 or less (secondary adjustment pressure: 0.13MPa or less) 0.07MPa or less (secondary adjustment pressure: more than 0.13MPa and 0.4MPa) 0.12MPa or less (secondary adjustment pressure: more than 0.4MPa and 0.8MPa)
Allowable leakage amount 0.05% or less of the rated flow rate
End connection JIS 10K RF flangeWe also manufacture products with a primary pressure applied of 1.6 MPa or less. (RD-41F type has JIS 16K RF flange.) We also manufacture ASME / JPI class 150 and 300 flanges.
Material body SCS
Material Main part valve body SUS
Material Main part Valve seat SUS
Material Main part bellows SUS
Mounting posture Upright mounting on horizontal piping

Download materials

Download materials

Common to all product symbols

RD-41F Catalog

RD-41F Price list

RD-41F outline drawing

RD-41F Instruction Manual

RD41F-D □

RD41F-D reference diagram

Frequently Asked Questions and Explanations

Is there a leak in the steam pressure reducing valve?

The allowable leakage amount is stated in the specifications of each product.

Does the fluid flow without pressure adjustment?

It doesn't flow. It will flow normally only after adjusting the pressure.

How should I perform maintenance and inspection of the steam pressure reducing valve?

We perform regular maintenance once a year as a guide. Please refer to the instruction manual for details.

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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