A flapper valve includes a valve body, a valve cover pivotally coupled to the valve body at a hinge between an open and closed position, and a biasing element biasing the valve cover to the closed position. The valve cover includes an interior face comprising a sealing surface and a boss including a face surrounded by a beveled edge joining the boss with the sealing surface.
申请公布号
CA2827208(C)
申请公布日期
2017.01.31
申请号
CA20122827208
申请日期
2012.02.13
申请人
THRUBIT B. V.
发明人
MACRAE, JONATHAN;FINCI, BULENT;PEDRAZA, JAIME;SCHIEL, MARK;PORTER, ROBERT CRISPIN