Self-actuating PRV · SV-PR Series
Supreme SV-PR Self-Actuating Pressure Reducing Valve
Internally sensed pilot and piston-operated pressure reducing valve with direct spring and diaphragm actuation. Compact design for accurate regulation across a wide flow range on steam, air and industrial gas — no instrument air required for basic duty.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | Internally pilot & piston, spring & diaphragm |
| Size | Screwed 15–25 mm; Flanged 25–150 mm |
| Class | 150# & 300# / BS 10 Table H |
| Facing | RF or FF |
| Body | Carbon steel / alloy steel / stainless steel (ASTM A216 WCB typical) |
| Trim | CF8 / CF8M / SS304 / SS316; stellited optional |
| Leakage | Class IV |
| Reduction ratio | 20:1 |
| Min differential | 7 psig |
Key materials (typical build)
- Body / pilot housing / spring housing: ASTM A216 Gr. WCB
- Main valve & seat: ASTM A351 Gr. CF8
- Piston / pilot: SS304 / SS316
- Diaphragm: SS316
- Springs: SS302 / carbon steel
- Gasket: aramid fibre (non-asbestos)
Provide an external balance pipe if reduced pressure is below about 55% of inlet pressure.
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Send fluid, inlet/outlet pressure, flow, temperature, size and end connection for a firm offer from Ahmedabad.