copper access valve,check valve with check or without check,with head part or without part check valve,access valve,charging valve , refrigeration ... .Access valve,Refrigeration parts for refrigerator,air conditioner,and auto air conditioner industriesTube can be soft or hard,tube ... 40mm,50mm,60mm,70mm,80mm,90mm,100mm,120mm.......with check or without check, with head part or without head partWe need ...