Drainable shutoff valve with filter

Details Drainable shutoff valve with filter Drainable shutoff valve with filter

1975-03-18

1976-03-02

Klinksiek, Henry T.

Fluid handling

With means for separating solid material from the fluid

Hollow strainer, fluid inlet and outlet perpendicular to...

13762526, E03B 707, F16K 1106

Patent

active

039411524

ABSTRACT:
A handle-carrying operating plug serving also a valve body-closing bonnet function, having a threaded internal engagement with the body, has a sliding relatively rotatable lost motion connection with an internal valving stem carrying a valving member, whereby the valving member, displaced to open position by plug-rotation in one direction, is permitted to advance in the body from an open position to a closed position under water flow or static pressure or/and spring bias, as the plug moves out upon rotation in the other direction for valve closing, and with a permitted further plug member rotation after valve closing, a drainage passage through the plug opens by relative axial motion of plug and stem; and by further rotation the plug is withdrawable for cleaning of a filter on the outlet side of the valving region in the body, the filter being plug-supported, spring biased to follow the plug to the body mouth, or merely body supported; ensuring a shut off condition when the valve body is opened for cleaning or line drainage. Cartridge and non-cartridge forms are disclosed.

REFERENCES:
patent: 3249123 (1966-05-01), Berg

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