Service valve is used for refrigeration and air conditioning system, to realize to control the refrigerant. Products include 2way and 3 way type, connection dimension from 1/4" to 3/4". working temperature-30~+120 Pressure: 4.41MPa, 6.22MPa Air tightness: 2.94MPa, 4.15MPa Leakage: less than 1X10-6 mmHg.L/sec Refrigerant: R22, R407C, R410a Service valve(square body) are used for residential air conditioners. The valve is to connect indoor and outdoor unit, through operating valve stem, the inner circle can be closed. It can be a checking valve to drain air and ad refrigerant during maintaining, also be used for other refrigerating circle systems. It includes flare nut and dual tube types, connection dimension from 5/8" to 1-1/16". Refrigerant: R22, R407C, R410A Fluid temperature: -30~+120 degree parts mainly used for air conditioner and refrigeration equipments,include half union,brass connection, brass flare nut, etc. Dimension from 1/4" to 3/4".