RD-40 type
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A direct acting pressure reducing valve suitable for fine control of steam pressure in various devices. Compact and lightweight, it is ideal for embedding in equipment.
A pressure reducing valve that is ideal for food / kitchen equipment, medical equipment, laundry equipment, and air conditioning equipment (humidification) that dislike rust.
For higher grade steam lines, the main body is made of stainless steel.
Where to use
Food machineryMedical equipmentLaundry equipment

Major features

  • It is possible to secure a large flow rate (heat amount) required when starting up the equipment.
  • The main body is made of bronze or stainless steel, and the main part is made of stainless steel, so clean steam can be supplied.
  • The secondary pressure can be finely adjusted with the manual handle of the automatic locking mechanism.
  • High durability with SUS316L bellows.

specification

Product code RD40-J □The symbol of the secondary adjustment pressure range is entered in □.
type Made of bronze, screwed
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 Rc screw
Material body CAC406
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-40 Catalog

RD-40 Price List

RD-40 outline drawing

RD-40 Instruction Manual

RD40-J □

RD40-J 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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