Safety relief (PSV) · SV-SR Series
Supreme SV-SR Safety Relief Valve
Angle discharge, spring-loaded, full lift, modified nozzle, conventional type flange-end thermal / pressure / safety relief valve. Top guiding with unobstructed seat bore for maximum discharge capacity. Close or open bonnet; open cap and plain lever options.
Technical specifications
| Parameter | Specification |
|---|---|
| Type | Angle, spring-loaded, full lift, conventional |
| Size | 20×25 mm to 50×50 mm |
| Class | 150# & 300#; BS 10 Table H × E |
| Facing | RF or FF |
| Body | Carbon steel / alloy steel / stainless steel |
| Trim | CF8 / CF8M / SS304 / SS316; stellited optional |
| Orifice | 12.7 mm to 19.0 mm |
| End connection | Flange end |
Key materials (typical build)
- Body / bonnet / cap: ASTM A216 Gr. WCB
- Nozzle / guide / nozzle ring / disc holder: ASTM A351 CF8 / CF8M
- Disc / stem / lock screw: SS304 / SS316
- Spring: carbon steel / alloy steel / SS302
- Gasket: aramid fibre (non-asbestos)
Applications: steam pipe line protection, small industrial boilers (SIB), thermal expansion. Each valve individually tested with compressed air.
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