cast iron gate valve NRS material:cast iron/ductile iron pressure:Clalss 125/ ... .,Ltd. is a professional manufacturer of cast iron/ductile iron gate valve, check valve, globe valve and Y strainer according to ... so on. Product Description in details:502-F cast iron gate valve NRS1.Design Conforms to MSS SP-702.Flanges drilled ... .Pressure test: MSS SP-70 or API598 ANSI cast iron gate valve