Single-Lever Safety Valve

Single-lever safety valve

Principle of safety valve selection:

1. Exposed type full lift spring safety valve is usually chose for steam boiler using.

2. Low lift spring safety valve is usually chose when the medium is liquid.

3. Sealed Fall lift spring safety valve is usually chose when the medium is air or other

4. Full lift inner safety valve is usually chose for tank-truck for liquefied petroleum gas using or tank car for liquefied petroleum gas using.

5. Pilot operated safety valve is usually chose for Christmas tree using.

6. The pilot operated safety valve with functions of safety and controlling is usually used in turbine high pressure bypass of steam-electric power equipment.

7. The safety valve with release level should be chose when the opening-test is demanded regularly. Disc can be lifted slightly at the fluid pressure above 75% of opening pressure.

8. If temperature of medium is higher, the safety valve with radiator should be chose to bring down the temperature of spring cavity when operating temperature above 300º C in sealed type safety valve or above 350º C in exposed type safety valve.

9. Bellow seal safety valve should be chose when backing pressure of valve is changed and amount of change above 10% of opening pressure.

10. If the medium is caustic, bellow seal safety valve should be chose to protect important parts from fault.

Features:

This type safety valve is applicable to the boiler and pressure container which the working temperature is less than 450º C, which will avoid the pressure rate beyond the allowed upper limit. The medium can be steam or air.

Nominal diameter is from 25mm to 200mm.