Sewer check valve with cutting seat

Details Sewer check valve with cutting seat Sewer check valve with cutting seat

F - Mech Eng,Light,Heat,Weapons

16

K

137/61

F16K 31/02 (2006.01) E03F 7/04 (2006.01) F16K 15/03 (2006.01) F16K 15/18 (2006.01) F16K 31/18 (2006.01) F16K 33/00 (2006.01)

Patent

CA 1276524

SEWER CHECK VALVE WITH CUTTING SEAT ABSTRACT OF THE DISCLOSURE In place of one of the usual blunt seats, a sewer check valve has a knife-edge extending from one of the seats to eliminate holding of com- pressed, relatively tough chunks of sewage between seats by cutting through the chunks, and has room for the cut pieces to move away from the seats. The flap of the valve has a lever extending therefrom, and a spring actuated rod retained by a catch is released to strike against the lever for forcing the flap against the knife-edge. The catch may be released manually, but is pre- ferably released by slightly delayed operation of a solenoid in response to operation of a level sensing device in the housing of the valve.

517591

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