Drain valve

Details Drain valve Drain valve

1979-12-19

1982-02-09

Cline, William R.

Valves and valve actuation

Valve actuator is inlet or outlet

Plural motions of valve

251353, 251144, F16K 3158

Patent

active

043146899

ABSTRACT:
A drain valve for handling contaminated fluids includes a body having a drain port and an internal passage communicating therewith. A plug is disposed in the internal passage and the plug defines a drain passage which communicates with the internal passage. Further, the drain valve includes an actuating device for selectively positioning the plug to a drain port opening position and to a drain port closing position, and a device for preventing contamination of the actuation device. Accordingly, contaminates are prevented from reaching the actuating device and reducing the efficiency of the drain valve. The drain valve also includes a seal located above the drain port. The plug sealingly engages the seal in the drain port closing position. With the seal located above the drain port, contaminates in the fluid are unable to collect thereon and thus do not abrade the seal as the plug is actuated into the drain port closing position.

REFERENCES:
patent: 247668 (1881-09-01), Loftus
patent: 971361 (1910-09-01), Dennis
patent: 2823699 (1958-02-01), Willis
patent: 3103341 (1963-09-01), Moran
patent: 3184091 (1965-05-01), Hoffman

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