Japan, Yoshitake
YOSHITAKE GP-1000H Pressure Reducing Valve Steam
Made in Japan
Manufacturer: Yoshitake
Model: GP-1000H
- Maximum inlet pressure: 1.6 MPa
- Superior durability
- Stable performance
- Valve leakage meets ANSI Class IV
- High reduction ratio (20:1)
Specifications
| Features | For steam, Max. 1.6MPa | |
|---|---|---|
| Type | Pilot operated piston type | |
| Specifications | Product type | Pilot-operated type |
| Nominal size | 15A (1/2″) – 100A (4″) | |
| Application | Steam | |
| End connection | JIS 16K FF flanged, ASME Class 300 flanged | |
| Inlet pressure | 0.1 – 1.6 MPa | |
| Reduced pressure | 0.05 – 1.4 MPa (*) | |
| Reduced pressure | 90% or less of the inlet pressure(gauge pressure) | |
| Min. differential pressure | 0.05 MPa | |
| Max. pressure reduction ratio | 20 : 1 | |
| Working temperature | Max. 220 degree(C) | |
| Valve seat leakage | 0.01% or less of rated flow | |
| Material | Body | Ductile cast iron |
| Valve and valve seat | Stainless steel | |
| Piston, cylinder | Stainless steel | |
| Diaphragm | Stainless steel | |
Remarks
* Reduced pressure
A: 0.05-0.9 MPa
B: 0.9-1.4 MPa
Dimensions and Weights (JIS 16K FF flanged)
| Size | L (mm) | H (mm) | Weight (kg) | Cv value |
|---|---|---|---|---|
| 15A(1/2) | 150 | 291 | 8.0 | 1 |
| 20A(3/4) | 155 | 291 | 8.5 | 2.3 |
| 25A(1) | 160 | 300 | 10.0 | 4 |
| 32A(1 1/4) | 190 | 333 | 14.0 | 6.5 |
| 40A(1 1/2) | 190 | 333 | 14.5 | 9 |
| 50A(2) | 220 | 353 | 20.0 | 16 |
| 65A(2 1/2) | 245 | 357 | 30.0 | 25 |
| 80A(3) | 290 | 404 | 35.0 | 36 |
| 100A(4) | 330 | 450 | 52.5 | 64 |
Dimensions and Weights (ASME Class 300 flanged)
| Size | L (mm) | H (mm) | Weight (kg) | Cv value |
|---|---|---|---|---|
| 25A(1) | 160 | 300 | 10.0 | 4 |
| 32A(1 1/4) | 180 | 333 | 14.0 | 6.5 |
| 40A(1 1/2) | 200 | 333 | 15.5 | 9 |
| 50A(2) | 230 | 353 | 21.0 | 16 |
| 65A(2 1/2) | 278 | 357 | 30.0 | 25 |
| 80A(3) | 310 | 404 | 37.0 | 36 |
| 100A(4) | 350 | 450 | 57.0 | 64 |
About flow rate
Please refer to the nominal size selection chart when the inlet pressure is 0.6 MPa or more and the pressure reduction ratio exceeds 10:1.
Selection data：
Find the intersection point of the inlet and reduced pressures. If the intersection point is within range (A) in the chart, the pressures are controllable with a single pressure reducing valve.
They can be controlled by two-stage pressure reduction if the intersection point is within range (B). The valve does not fulfill specified performance in range (C).
[Example 1]
When selecting the nominal size of a pressure reducing valve whose inlet pressure •P ‘), reduced pressure (P2), and steam flow rate are 0.6 MPa. 0.4 MPa, and 800 kg/h, respectively, first find intersection point (A) of the inlet pressure of 0.6 MPa and the reduced pressure of 0.4 MPa. Trace down vertically from this intersection point to find intersection point (B| with the flow rate of 800 kg/h. Since intersection point (B) lies between nominal sizes 40A and 50A. select the larger one. 50A.
[Example 2]
When selecting the nominal sue of a pressure reducing valve whose pressure (P), reduced pressure (Pz), and steam flow rate are 0.8 MPa. 0.05 MPa. and 600 kg/h. respectively, first find intersection point (C) of the inlet pressure of 0.8 MPa and the diagonal line. Trace down to the left from this diagonal to find intersection point (D) with the reduced pressure of 0.05 MPa. Trace down vertically from intersection point (D) to find intersection point (E) with the flow rate of 600 kg/h. Since intersection point (E) lies between nominal sizes 32A and 40A select the larger one. 40A.
- Set the safety factor at 80 to 90%.
Dimensional drawing
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