<p>The disclosure is of a swing check valve having a spherical body with cylindrical flow passageway hubs welded thereto. A valve seat surrounding the upstream flow passageway is engagable by a valve clapper which itself is a spherical section whereby its center of gravity is located back from the sealing surface around its periphery so that gravity will close the valve, even with the pivotal axis located adjacent the valve seat and within the spherical body. A liner having a frustoconical inner-surface embraces at least the bottom half of the valve seat and tapers inward to merge with the inner surface of the downstream hub.</p>
申请公布号
DE2429930(C3)
申请公布日期
1982.04.08
申请号
DE19742429930
申请日期
1974.06.21
申请人
GROVE VALVE AND REGULATOR CO., OAKLAND, CALIF., US
发明人
BUCK, FRANK EUGENE, TIBURON, CALIF., US;GRAHAM, DONALD E., SAN LEANDRO, CALIF., US;BATTAGLIA, LARRY A., BENICIA, CALIF., US;BURGER, HARRY FRED, SAN FRANCISCO, CALIF., US
