Reducing valve for steam Yoshitake GD-30

Reducing valve for steam Yoshitake GD30Reducing valve for steam Yoshitake GD30Reducing valve for steam Yoshitake GD30Reducing valve for steam Yoshitake GD30
in stock
Price: 19 000.00 UAN



19 000.00 UAN

  • Manufacturer: Yoshitake (Japan)
  • Material: cast bronze, stainless steel, phosphor bronze
  • Action type: direct action
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  • Specifications
  • Description
  • Dimensions and weight
  • Chart
  • Delivery and payment
Nominal size15A-25A 40A • 50A
Inlet pressureNo more than 1.7 MPa
Reduced pressure(A) 0.02-0.1 MPa (spring color: yellow)
(B) 0.05-0.4 MPa (spring color: blue)
(С) 0.35-1.0 MPa (spring color: yellow-green)
Min. differential pressure0.05 MPa
Max. coefficient pressure reduction10:1
Max temperature210 °C
Valve seat leaksNo more than 0.1% of nominal flow
MaterialBodyCast Bronze
Valve, valve seatStainless steel
BelfonPhosphor bronze
ConnectionJIS Rc Thread
  • Slim design, compact and lightweight.
  • Simple construction, high strength and easy maintenance.
  • Easy installation thanks to threaded connection.
  • Possibility to adjust the pressure manually without any tools.
  • High wear resistance and strength of stainless steel valve and valve seat
  • A filter (60 mesh) is installed to protect the valve and seat from contamination.
  • Excellent performance provided by impulse tube external pressure bellows.
Nominal SizedLHH1Weight
15ARc 1/280191471.9
20ARc 3/485191471.9
25ARc 195191772.0
40ARc 1-1/21403077710.1
50ARc 21503077710.4

GD-30 Schematic

Nominal sizing chart (for steam)

Sizing Chart (Steam)


When selecting the nominal size of the pressure reducing valve at the inlet pressure (P1), reduced pressure (P2) and steam flow, respectively, 1.3 MPa, 0.6 MPa and 200 kg/h, first find the point of intersection of the pressure lines at inlet 1, 3 MPa and reduced pressure 0.6 MPa. From this point, draw a line down from the intersection of the lines to find the nominal size with a flow rate of 200 kg/h or more.

In this case, the nominal size will be 20A.

Note. The nominal sizing diagram is built on the basis of measurement data. As you can see, there is no specific relationship between the pressure difference and the flow rate on the diagram, so it is impossible to calculate a fixed coefficient Сv.

• The safety factor should be taken equal to 80-90%.


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Reducing valve for steam Yoshitake GD30

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