Fire Protection Resilient Seat Swing Check Valve Flange End 
Single flapper check valve by Arita Fire Solutions, ensures single directional flow allows horizontal and vertical (upwards only) installation in fire protection system.

Certification: UL/FM
Model: SW55 Series
Design Standard: AWWA C508
Size: 2"-12"
Rating: 300 PSI
Body: Ductile Iron
Cover: Ductile Iron
Rocker: Ductile Iron
Body/Cover Coating: Epoxy Resin Fusion Bonded
Clapper: Stainless Steel 304+Carbon Steel+EPDM
O-Ring: EPDM Rubber
Bolt, Nut, Plug: Stainless Steel 304
Connection: Flange End

Resources

Technical Drawing Arita SW55-Swing Check Valve