Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1977-12-19
1979-12-04
Schwadron, Martin P.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
126285A, 251174, 251328, F16K 302, F23L 1306
Patent
active
041766733
ABSTRACT:
A sliding gate valve comprising a housing; a sliding gate; an enclosed void space between the gate side edges and the wall of the housing when the gate is in the closed position; and a purge line for injecting pressurized fluid into the void space; improved by gate side edge sealing means comprising a downstream seat mounted on the interior wall of the housing and an upstream seat assembly comprised of a rigid, elongated channel on the interior wall of the housing, parallel to, and upstream of, the gate when in the valve-closed position, the channel having a back wall and at least one side wall, the back wall being substantially parallel to the gate; a rope positioned lengthwise in the channel; the channel having an elongated metal strip flexibly attached along the first of its two long edges to a side wall of the channel so as to sandwich the rope between the back wall of the channel and the rear surface of the metal strip; the seat assembly being positioned such that when the gate is closed the gate's upstream face presses against the front surface of the metal strip, urging the strip against the rope, the resilience of the rope providing a pressure counter to that exerted by the gate member; the downstream seat and upstream seat assembly being so adapted that upon withdrawal of the gate member from the housing, the metal strip's front surface is urged against the downstream seat in sealing engagement, effectively closing the void space.
REFERENCES:
patent: 2964036 (1960-12-01), Lowe
patent: 2996063 (1961-08-01), Lowe
patent: 3228389 (1966-01-01), Lowe et al.
patent: 4022241 (1977-05-01), Fox
patent: 4093245 (1978-06-01), Connor
Gerard Richard
Mosser Industries, Inc.
Schwadron Martin P.
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