Japan, Yoshitake
YOSHITAKE GD-4B Pressure Reducing Valve – Air
Made in Japan
Manufacturer: Yoshitake
Model: GD-4B
- High accuracy
- Stable low pressure control
- Balance type leads to large reduction ratio
Specifications
| Features | For air, slight pressure, reduction ratio 20:1 | |
|---|---|---|
| Type | Direct-acting type | |
| Specifications | Product type | Direct-acting type |
| Nominal size | 15A (1/2″) – 150A (6″) | |
| Application | Air, other non-dangerous fluids | |
| End connection | JIS 10K FF flanged | |
| Inlet pressure | Max. 800 kPa (*Max. 500kPa for 65-150A) | |
| Reduced pressure | 2 – 200 kPa (*1) | |
| Reduced pressure | 85% or less of the inlet pressure(gauge pressure) | |
| Min. differential pressure | 3 kPa (Φ256) | |
| Working temperature | 5 – 80 degree(C) | |
| Material | Body | Cast iron |
| Main valve | NBR and stainless steel | |
| Main valve seat | Stainless steel | |
| Diaphragm | NBR | |
Remarks
*1 Contact us pressure range for each valve.
*2 Min. differential pressure
Diaphragm
Dia. 256mm: 3 kPa
Dia. 340 mm: 2 kPa
Dia. 400 mm: 1 kPa
*3 Max. pressure reduction ratio
20-50A — 20:1
65-150A — 15:1
Diaphragm Dia. 256mm type
| Size | L (mm) | H (mm) | Weight (kg) | Cv value |
|---|---|---|---|---|
| 20A(3/4) | 170 | 570 | 27 | 2 |
| 25A(1) | 170 | 570 | 28 | 3 |
| 32A(1 1/4) | 180 | 580 | 28 | 4 |
| 40A(1 1/2) | 180 | 580 | 29 | 5 |
| 50A(2) | 180 | 600 | 31 | 8 |
| 65A(2 1/2) | 215 | 695 | 39 | 12 |
| 80A(3) | 260 | 715 | 48 | 16 |
| 100A(4) | 300 | 785 | 64 | 24 |
| 125A(5) | 360 | 840 | 88 | 36 |
| 150A(6) | 382 | 895 | 123 | 48 |
About flow rate
Selection data：
Dimensional drawing
