OEM DIN series Valves cast iron valve cast steel valve OEM valves: (1)All kinds of cast iron valves,cast ... steel valves,stainless steel valves such as gate valve,globe valve,ball valve,butterfly valve,check valve,angle valve,strainer,mud box etcs in accordance with ... socket,steel union and joint. (3)All kinds of rubber expansion joints such as single sphere,double sphere with flange ,union ...