... /1, BSP, NPT, etc, 100% Leakage Test Brass gate valves,forged brass gate valve,gate valve,Brass valves,1,Gate valve ... , BSP, NPT, etc 2,Technical standard:1. The body is forged with brass C3771, C37000, CW614N, CW617N, etc.2. The valve ... resistance, labor-saving operation, and unconstrained flow direction. 3. The wheel is made of HT200 gray cast iron...4. female thread ...