... etc, 100% Leakage Test Brass gate valves,forged brass gate valve,gate valve,Brass valves,1,Gate valve Body BRASS: CW614N, CuZn39Pb3, ... small fluid resistance, labor-saving operation, and unconstrained flow direction. 3. The wheel is made of HT200 ... process before delivery.Material Control, Machining Quality Control, In-coming Material Inspection, Assembly Line Quality Control, Leakage Testing, Final ...