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Si 910
Safety valves
Safety Valves acc. to ASME Sec. I, Sec. III and Sec. VIII.
- High capacity.
- Fixed overpressure and blowdown acc. ASME Sec. I with no rings hence no requirement for adjustment.
- Stable position at full lift by mechanical lift stop.
- Full nozzle design.
- Nozzle and disc seat hard faced is standard.
- Special disk spring design for high pressures and large sizes ensures optimum operation.
Product Specifications
Inlet sizes
- NPS 1.5 to NPS 12
Inlet pressure rating
- ASME Cl 150 to Cl 2500
Set pressures
- 3 bar g to 330 bar g
- 44 psig to 4785 psig
Temperature range
- 650 °C / 1202 °F
Overpressure
- 3%
Blowdown
- 4% – 7%
Allowable built-up back pressure without bellows
- 25% of the set pressure
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