Detailed Product Description 502-F cast iron gate valve NRS1.Design Conforms to MSS SP-702.Flanges drilled to ANSI B16.1(125lb)3.Face to face dimensions conform to ANSI B 16.10(125lb)4.Working pressure:125S 200WOG5.Suitable media:water,oil,gas6.Body,bonnet,disc:ASTM A126B7.Stem: brass ASTM B168.Trim: cast bronze ASTM B629.Size: from DN50 to DN400 10.Pressure test: API598