... valve mould, check valve mould, membrane valve mould, bottom valve mould, gate valve mould, locking valve mould, deflation valves mould, radiator valve mould, ball valve ... PE, PE-RT, POM and other material. Types are socket, thread, steel, brass, other metal, male, female, ... methods, Electric-Discharge Machining, Cutting by Spark Erosion with Traveling- Wire Electrodes, Mold Surface Finishing and ...