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Application range of Danfoss SFA15-SFV20-DN25 (TUV.SV.14) pneumatic safety valve

SFV 20-25 angle safety valve is a typical back pressure relief valve,
Especially designed to protect containers or other components from overpressure.
Valve design meets strict quality requirements and safety requirements for refrigeration installation
Full demand, and other international level certification requirements.
In the refrigeration system, it is recommended to use as an internal and external safety valve
use. The spring housing is closed tightly to prevent refrigerant leakage.
The inlet diameter of the valve is:
18mm (3/4 in.) SFV 20
23mm (1in.) SFV 25
Can provide set pressure from 10 to 25 bar g (145 to
363 psi g) valve.
Each valve can provide standard pressure of TÜV pressure setting certificate
Safety valve with force setting.

Design parameters of Danfoss SFA15-SFV20-DN25 (TUV.SV.14) pneumatic safety valve

■ Refrigerant
Suitable for refrigerants ammonia, freon, carbon dioxide (and sealing materials
Material compatible).
Not recommended for flammable hydrocarbons. If you need more details
For detailed information, please contact your local Danfoss sales company.
■ Pressure
Pressure setting range: 10-25 bar g (145-363 psi g).
If you need more detailed information, please contact your local Danfoss sales
the company.
■ The safety valve is designed as:
Strength test: 43 bar g (624 psi g)
Safety leak: same as set pressure
Important: The SFA safety valve is a safety valve related to back pressure (if the
If the pressure is greater than atmospheric pressure, the opening pressure of the valve will be greater than the setting
Pressure).
In some cases, such as vibration (must be avoided), stress
Changing the time may cause the valve to close and the operating pressure difference to increase.
■ Pressure setting
The working pressure of the refrigeration unit must be at least higher than the set pressure of the safety valve
15% smaller. This will ensure that the safety valve can be smoothly seated after activation.
■ Temperature range
–30 ℃ / + 100 ℃ (–22 ℉ / + 212 ℉)