Self-priming drain valve

Details Self-priming drain valve Self-priming drain valve

2006-08-15

2006-08-15

Jacyna, J. Casimer (Department: 3751)

Valves and valve actuation

Reciprocating valve

Push or pull operator

C251S144000, C222S501000

Reexamination Certificate

active

07090194

ABSTRACT:
Provided is a self-priming drain valve suitable for draining liquid from a tank wherein sediment and other solid matter has accumulated. The valve includes a reverse thread, stem-down to close operation, which allows the valve stem, and attached plug, to disturb the accumulated solid matter that is at rest at the valve's inlet. This disturbing action provides the inertia necessary to disturb the solid matter and begin the free flow of the tank's contents.

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patent: 6805262 (2004-10-01), Frazier

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