From Ball Check Valves
Lug type body: DN: 1 ¼' - 3' / Max. working pressure: 10 bar. Wafer type body: DN: 40 - 400 / Max. working pressure: 10 bar, DN: 50 - 200 / Max. working pressure: 16 bar. Material of body: Ductile iron GGG 40 + epoxy coating; Cast iron GG25 + epoxy coating. Seat: NBR. Applications: waste water, sewage, potable water, thick and viscous liquids.