Reducing valve for water Yoshitake GD-28S

Reducing valve for water Yoshitake GD28S
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Price: specify




  • Manufacturer: Yoshitake (Japan)
  • Material: cast stainless steel, EPDM
  • Action type: direct action
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  • Specifications
  • Description
  • Dimensions and weight
  • Chart
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ApplicationCold and hot water
Inlet pressure1.6 MPa or less
Reduced pressure(A) 0.05-0.35 MPa (B) 0.3-0.7 MPa
Min. differential pressure0.05 MPa
Max. coeff. pressure reduction10: 1
Operating temperature5-90 ° C
MaterialFrameCast stainless steel
Valve seatCast stainless steel
Valve plugEthylene Propylene Rubber
MembraneEthylene Propylene Rubber
CompoundJIS Rc Threaded Connection

A filter (40 mesh) is installed on models from 20A to 50A.

Pressure gauge connection with JIS Rc 1/4 thread.

Variants available with fluoroelastomer components.

  1. The parts of the flow path are made of a material resistant to corrosion, which excludes the presence of rusty debris.
  2. Low noise level.
  3. The pressure balanced design of the valve allows the reduced pressure to be kept constant without being influenced by the inlet pressure.
  4. The closed design keeps liquid inside even if the diaphragm is damaged or broken.
  5. The valve top is easily removable for inspection and maintenance.
  6. Compact and lightweight design makes piping easy.
Nominal sizedLHH 1The weight
20ARc 3/4135170412.2
25ARc 1135170412.2
32ARc 1-1 / 4180224574.7
40ARc 1-1 / 2180224574.5
50ARc 2200239.5616.5

схема Yoshitake GD-26S, 26SNE, 28S

Nominal sizing diagram

Differential pressure before and after the valve is not less than 0.15 MPa

Nominal size15A20A25A32A40A50A65A80A100A125A150A
Nom. flow rate, l / minthirty406010015025030045070016001800

* If the differential pressure upstream and downstream of the valve is less than 0.15 MPa, select the correct nominal size using the appropriate diagram below.

Inlet pressure

Давление на входе

Consumption graph

Nominal size: 15A-50A

График расхода  Номинальный размер: 15А-50А

Consumption graph

Nominal size: 65A-100A

График расхода  Номинальный размер: 65А-100А

Inlet pressure

Давление на входе

Consumption graph

Nominal size: 125A-150A

График расхода  Номинальный размер: 125А-150А

Noise performance graph

График шумовых характеристик 65А-100А

Pressure curve

График характеристик давления

This graph shows the change in reduced pressure when the pressure of 0.6 MPa at the valve inlet begins to fluctuate between 0.15 MPa and 1.0 MPa, while the reduced pressure is set at 0.1 MPa.

Flow characteristics graph

График характеристик расхода

* Pressure offset

Nominal sizePressure rangeDecrease range pressureOffset pressure
15A - 100AA0.05-0.35 MPano more than 0.05 MPa
B0.3-0.7 MPano more than 0.10 MPa
125A, 150AA0.05-0.20 MPano more than 0.07 MPa
B0.2-0.5 MPano more than 0.12 MPa


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Reducing valve for water Yoshitake GD28S

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