Shut-off fitting

Details Shut-off fitting Shut-off fitting

2003-06-04

2008-11-11

Bastianelli, John (Department: 3753)

Valves and valve actuation

Reciprocating valve

Gate

C251S328000, C251S329000

Reexamination Certificate

active

07448595

ABSTRACT:
A shut-off instrument for a flow medium, in particular a slide valve instrument designed for pressurization on both sides with an instrument housing forming a flow channel and a slide valve chamber and with a soft-sealing shut-off element closing off the flow channel and with a slide valve stem which penetrates a seal arrangement and/or bearing arrangement in a housing neck extension delimiting the slide valve chamber and which is rotationally connected to a stem nut coupled to the shut-off element by a screw contact. The shut-of element is designed to include more than one part and at least one external dimension of the main body is slightly smaller than a nominal width of the flow channel and seal elements are arranged on opposite support surfaces of the main body via an engaged connection projecting over the external dimension with a peripheral edge collar.

REFERENCES:
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patent: 3215399 (1965-11-01), McInerney et al.
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patent: 6845783 (2005-01-01), Sheppard
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International Search Report.
International Preliminary Examination Report.

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