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Swing check valves come with resilient seats. Installed in pumping applications to prevent back flow they can be used for drinking water as well as waste water. The disc is connected to the shaft via a flexible bush that allows disc and valve seat to adjust exactly. All interior parts are ductile iron coated with drinking water approved epoxy or EPDM.
PN(BS EN 1074-1 &2) ：PN10/PN16
Design Standard ：GB12236
Face To Face Length：BS5163 / BS EN 558-1·GB12221
End Flange ：BS4504 / BS EN 1092-2 GB/17241.6/ ISO7005.2
Test ：BS EN1074-2 · GB/T13927