... ,NPT,etc.5.Size: 15mm.22mm.28mm6. The body is forged with brass C3771, C37000, CW614N, CW617N, etc.7. The valve ... resistance, labor-saving operation, and unconstrained flow direction. 8. The wheel is made of HT200 gray cast iron..Quality and Inspection ... Compression Gate Valve B.S.5154 SIZE 15mm22mm28mm35mm42mm54mm CXC BS5154 Forged Brass Gate Valve with connectors