We supply many types of Brass Radiator Valves and brass Exhaust Valves. Commonly, we make NPT thread for America customers, make BSP or BSPT thread for Europe and Asia customers. Our products is produced by CNC machine. Size 1/4'' to 2'', all bodied and caps are produced by forge technics. Size 21/2'' to 4'', they are made by casting technics. Working pressure: 16Bar-25Bar( 150#WSP, 600WOG). Material: C37700, MS58(CuZn40Pb2), CuZn39Pb3, CW602N. Product surface can select plated nickel or chrome.