Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1994-09-20
1997-07-08
Walton, George L.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
137240, 137312, 13761419, 134166C, F16K 1120, F16K 31122, B08B 902
Patent
active
056451024
ABSTRACT:
A leak resistant, switching, double valve system consists of two sliding valve bodies in a valve housing with connecting lines. The two sliding valve bodies, which can be actuated independently of one another, are in contact in the closed position with valve seats in the valve housing, and are located at some distance one behind the other, forming a leak cavity between them. During the opening process, the first sliding valve body, before it leaves its valve seat, while simultaneously reducing the size of the leak cavity, can be placed in contact with the second sliding valve body, which is provided with a tubular extension which exits the valve housing in a sealed manner and connects the leak cavity to the environment of the valve system. With such a double valve system, the invention teaches that an optimal cleaning can be performed with minimal consumption of flushing agent, because the two sliding valve bodies can be moved independently of one another, each by a partial stroke opposite to the direction of the opening motion, into a flushing position, in which the sliding valve body is free from its valve seat and is in contact with a housing stop provided with flushing agent passages.
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Baumbach Frank
Brackelmann Wolfgang
Schramm Norbert
APV Rosista GmbH
Walton George L.
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