Premium Materials: The flow control valve is made of high quality brass, heavy duty, rust-proof, durable and long-term use. Easy Installation: Connect the end of the quilted tube, the top loader rotation is easy to operate, easy to switch and minimizes refrigerant loss during maintenance. Easy to Install: Connect the end of the quilted tube, the top loader rotation is easy to operate, easy to switch and minimizes refrigerant loss during maintenance. Sealing Treatment: Factory seals before treatment, the high-end CNC machine, multi-component joints to ensure that no leakage occurs, safe and reliable. Application: The R22/R410A refrigeration charging adapter can be safely adapted to the air conditioning system, air conditioning, air conditioning, refrigerant control valve, flow valves.