DN100 PN16 GG25 cast iron swing check valve
Main materials of parts
1.Body:GG25
2.Bonnet:GG25
3.Stem:2Cr13/SS304/SS316/Carbon Steel
4.Stem Nut:SS201/brass
5.Disc:EN-GJL-250/GGG50
6.Seat:Bronze,Brass
7.Bonnet Gasket:Graphite
8.Hanger:EN-GJS-5007
9.Hanger pin:Stainless Steel
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