Primary Pressure Regulating Valve
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GD-20RC
* Discharge excess pressure and maintain a constant line pressure as a pump relief valve * Prevents falling water conditions in the open circuits of high-rise buildings * Nylon 11 coating both inside and outside |
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| Feature | Direct acting type / Ductile cast iron / Nylon coating | |
| Category | Primary pressure regulating valve | |
| Specifications | Application | Cold and hot water , Oil (kerosene , heavy oils A and B) , Air , Other non-dangerous fluids |
| Pressure regulating range | 0.05 - 0.7MPa(*) | |
| Connection | JIS 10K FF flanged | |
| Material | Body | Ductile cast iron |
| Valve seat | Stainless steel or Bronze | |
| Valve disc | NBR | |
| Diaphragm | NBR | |
| * 15A-80A A: 0.05-0.25 MPa B: 0.26-0.7 MPa 100A-150A A: 0.05-0.25 MPa B: 0.26-0.5 MPa |
| Size | L (mm) | H (mm) | Weight (kg) | Cv value |
| 15A(1/2) | 145 | 309 | 8.2 | 1.5 |
| 20A(3/4) | 150 | 309 | 8.2 | 2.7 |
| 25A(1) | 150 | 330 | 10 | 4 |
| 32A(1-1/4) | 195 | 395 | 17.3 | 8.5 |
| 40A(1-1/2) | 195 | 395 | 17.3 | 11 |
| 50A(2) | 195 | 409 | 19.2 | 14 |
| 65A(2-1/2) | 270 | 555 | 40 | 23 |
| 80A(3) | 270 | 582 | 43.7 | 32.5 |
| 100A(4) | 308 | 645 | 70 | 48 |
| 125A(5) | 380 | 849 | 145 | 75 |
| 150A(6) | 400 | 918 | 175 | 108 |
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| CAD external view (137 KB) |
| Drawing (749 KB) |
