Ammonia fluorine refrigeration safety valve type selection instructions

In order to protect the safe operation of the refrigeration system, the ammonia (fluorine) storage device, condenser, intercooler, etc., is provided with a safety valve。The following is a common safety law model to explain the meaning of the safety valve, for replacement reference。

‌ safety valve model: A42F-25C, the model is explained as follows: A stands for safety valve, 4 stands for flange type, 2 stands for full opening mode, F stands for sealing surface is tetrafluor surface, 25 stands for valve body nominal pressure is 2.5MPa, C means the valve body is carbon steel

A safety valve model: A11F-16Z

A represents the safety valve, 1 represents the wire connection, 1 represents the opening mode is micro-open, F represents the sealing surface is the tetrafluorosurface, 16 represents the nominal pressure of the valve body is 1.6MPa, Z for body cast iron (steel)