1.with iso9001, CE and WRAS certificate 2.high quality and reasonable price 3,prompt delivery knife gate valveDESCRIPTION1.Face to Face: EN 558-1, MSS2.Flanged ends: DIN 2501, BS 4504, ANSI B16.103.Test & Inspection: DIN 32304.Operator: handwheel MATERIAL LISTNo.PARTMATERIAL1"U"SEATEPDM/NBR2BODYDI,GGG40/50,ASTM A5363KNIFE304/3164STEM420/3045COVERDI,GGG40/50,ASTM A5366STEM NUTBRASS DIMENSIONS(mm) ...