Feature: The shell is made of wrought copper, and the parts are made of rigid stainless steel The orifice of valve can be changeable, and the degree of refrigeration could be flexibly adjusted With stable heat within the wide using range Applying to refrigerant R12 R22 R502 R134a R407c R404A R507 Safe working pressure: 450psig Highest temperature: 165°F Dimension of Outlet and inlet: 1/2?SAE)*3/8?SAE)