... abs,pp We are expert in producing plastic valve and pipe fitting moulds.We have more than ... years experience about making double ball valve moulds.union ball valve has seven parts.We can make ... , gate valves, locking valves, deflation valves, IBC valve, three way valve, water tapes, etc., made of ABS, U ... thinkness, inch, structure, surface, tempreture, MAX, MIN, connection, certificate, nice appearance,