1.Material: Red Copper,Brass 2.Conforms to ISO9001:2000 standard 3.High quality, competitive price 4.Available more of size Check valve, access valve, charging valve, refrigeration part, HAVC part Size: 1/4, 3/16, ... Tube length: 45--160mm With head or without head With check or without check We can supply various size of access valve(charging valve, check valve) for refrigeration. We need your ...