【Brass Material】 The refrigerant safety valve is made of durable brass, with thickened valve body and brass tube connection, it can be used continuously even under extreme conditions and is durable. 【Safe and Reliable】 Sealed before leaving the factory, high-end CNC machine tools, multi-component seals ensure no leakage, no longer have to worry about the air conditioning refrigerant freezing. 【Easy Operation】 High-end quality design, more convenient to rotate. Operation can be easily switched regardless of the position of the refrigerant adapter. 【Practical Accessories】 The flow control valve can be installed at the end of the charging pipe, which is easy to use regardless of the position of the safety valve and minimizes the loss of coolant during maintenance. 【Application】 The movable die can accurately control the high and low pressure valve needles of the air conditioner, with a sealing ring, the safety valve of the air conditioner is R22/R410, and the refrigerant charging safety