... , and restricting flow when closed. mini ball valve, compression ball valve So Among all the brass/bronze material, Brass Ball valve's market and selling are largest. Same ... America. mini ball valve, compression ball valve Connect Thread: NPT,BSP,BSPT,NPTF,ISO228,BS21,Compression End, Material: C37700,MS58(CuZn40Pb2), CuZn39Pb3,Commercial Forged Brass, CW602NSize ...