Bellows-operated PRV · SV-BR Series
Supreme SV-BR Bellows-Operated Pressure Reducing Valve
Globe type, single seated, top and bottom guided, spring and diaphragm actuated pressure reducing valve with bellows sensing for accurate downstream pressure control at high flow — no external electrical signal required.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | Globe, single seated, top & bottom guided, bellows sensing |
| Size | 25 mm to 150 mm |
| Class | 150# to 600# / BS 10 Table H |
| Facing | RF or FF |
| Body | Carbon steel / alloy steel / stainless steel |
| Trim | CF8 / CF8M / SS304 / SS316 |
| Characteristics | Linear / Equal% / Quick Open |
| Outlet pressure | Up to 14 kg/cm² |
| End connection | Flange / butt weld |
| Turn-down | Pressure 20:1 |
Key materials (typical build)
- Body / bonnets: ASTM A216 WCB / A217 WC6 / WC9
- Seat ring / plug / stems: SS304 / SS316 / CF8 / CF8M
- Guide bush: SS410
- Diaphragm: Buna-N with nylon reinforce
- Gland packing: grafoil ring
- Gasket: aramid fibre (non-asbestos)
Bellows ranges: Type A 0.5–2.0 kg/cm²; Type B 2.0–8.0 kg/cm²; Type C 8.0–14 kg/cm².
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