Product Introduction of TUV.SV.17-SFV20T2145 Pressure Safety Valve

The SFV 20-25 angle-type safety valve is a typical back-pressure relief valve, specifically designed to protect vessels or other components from overpressure.The valve design meets the stringent quality and safety requirements of refrigeration installations,as well as other international certification standards.In refrigeration systems, it is recommended for use as an internal or external safety valve.The spring housing is tightly sealed to prevent refrigerant leakage.

The inlet diameter of the valve is:

18mm (3/4 in.) SFV 20

23mm (1 in.) SFV 25

Valves with set pressures ranging from 10 to 25 bar g (145 to363 psi g) are available.Each valve can be supplied as a safety valve with a standard pressure setting,accompanied by a TüV pressure setting certificate.

■ Refrigerants

Suitable for refrigerants such as ammonia, Freon, carbon dioxide (compatible with sealing materials).Not recommended for flammable hydrocarbons. For more detailedinformation, please contact your local Danfoss sales office.

■ Pressure

Pressure setting range: 10 - 25 bar g (145 - 363 psi g).For more detailed information, please contact your local Danfoss salesoffice.

■ The safety valve is designed for:

Strength test: 43 bar g (624 psi g)

Safety leakage: Same as the set pressureImportant: The SFA safety valve is a back-pressure-dependent safety valve (if the backpressure is greater than atmospheric pressure, the valve's opening pressure will be higher than the setpressure).In certain situations, such as vibration (which must be avoided), pressure fluctuationsmay cause the valve to close and increase the operating pressure differential.

■ Pressure Setting

The operating pressure of the refrigeration unit must be at least 15% lower than the safety valve's set pressure.This ensures that the safety valve can reseat properly after activation.

■ Temperature Range

–30℃ /+100℃ (–22℉ /+212℉ )