The NRS ductile iron resilient seated gate valve, which is epoxy coated, can be safely used in municipal water supply,sewage and plumbing etc. material list: 1.Body-QT450-10 2.Bonnet gasket-EPDM 3.Wedge-QT450-10+EPDM 4.Stem nut-ZCuAl10Fe3 5.Bonnet-Qt450-10 6.O ring-NBR 7.Support bush-ZCuAl10Fe3 8.Gland housing-Qt450-10 9.Dust seal-NBR 10.Stem-2Cr13 11.Handwheel-ZG35 12.O ring-NBR 13.Packing ring-PTFE 14.Sealant-Parafin 15.Female hax head screw-Carbon Steel 16.O ring-NBR 17.Female hex head screw-Carbon Steel 18.Guide shoe-POM ply-wood package
