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Category >> เพรสเชอร์รีดิ่วซิ่งวาล์วRD-31
รหัส : RD-31
RD-31 (PRESSURE REDUCING VALVE)
Features
Bronze body prevents occurrence of rusty waterLow noise design
50% smaller, lighter than traditional cast iron products.
No water leakage even if the diaphragm is broken.
Flexible installation ( except that the strainer cap face upwardly).
Strainer embedded ( 40 meshes for nominal diaameter less than size 50mm).
Specifications
| Model Name | RD-31N L/H | RD-31FN L/H | RD-33N L/H |
| strong>Code Name | RD-31N-F □ | RD-31FN-F □ | RD-33N-F □ |
| ※ L(low press) or H (high press.) for adjustable secondary pressure is required in □ | |||
| Size | 15~50 (½"~2") | 215~50 (1"~2") | 65~150 (2½"~6") |
| End Connection | Screwed JIIS Rc | Flanged JIIS 10KFF | |
| Applicable primary pressure | Max. 1.0 MPa | ||
| Applicable Fluid | Water, hot water, air** & non-corrosive gasses** | ||
| Applicable Temperature | 5~90°C | ||
| Adjustable secondary pressure | Size 15~100mm L:0.05~0.35MPa, H:0.3~0.7MPa Size 125~150mm L:0.05~0.35MPa, H:0.3~0.5MPa | ||
| Maximum reducing rate | 10:1 | ||
| Maximum pressure diffential across the disc | 0.05MPa | ||
| Leakage allowance | Nil (confirm at pressure Gauge) | ||
| Valve body pressure test | Hydraulic 1.075MPa | ||
Materials | Body(Cast bronze), Trim (Cast bronze), Diaphragm & disc(Synthetic rubber) Spring case(Size 25~50mm: Cast Zinc, Size 65~150mm:Cast iron | ||
