| 摘要 |
A drain valve including a housing, a poppet, a seal, a follower pin, and a biasing mechanism. The housing defines a passage there-through from a first end to a second end, a cam surface at the second end with at least two detents therein, and at least one slot in the housing fluidly coupling the passage to exterior of the housing. The poppet is disposed within the passage. The seal is disposed between the housing and the poppet. The follower pin is coupled to the poppet near the poppet second end. The follower pin is configured to move along the cam surface and settle in at least one of the at least two detents. The spring is configured to bias the poppet away from the second end.
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