Valves and valve actuation – Valve actuator is inlet or outlet – Biased valve
Patent
1999-05-12
2000-10-03
Shaver, Kevin
Valves and valve actuation
Valve actuator is inlet or outlet
Biased valve
2511469, 251339, F16K 3100
Patent
active
061261424
ABSTRACT:
A drain system for a liquid container such as an oil sump comprising an insert into the container, a combination tool and a safety plug. The insert contains a ball-type check valve which is opened by insertion of the combination tool, which may be held in place by rotation to engage a locking pin in the drain. The safety plug is insertable in the drain plug and tightened with a handle on the combination tool.
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Wolf Edith M.
Wolf Edwin J.
Bonderer David A.
Shaver Kevin
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