access valve,charging valve , refrigeration part,HAVC part size:1/4,3/16,1/8........ tube length:45--160mm check valve,access valve,charging valve , refrigeration part,HAVC partSize:1/4,3/16,......Tube length:45--160mmwith head or without headwith check or without check We can supply various size of access valve(charging valve, check valve) for refrigeration.