Pipeline switch with leakage control and cleanable leakage cavit

Details Pipeline switch with leakage control and cleanable leakage cavit Pipeline switch with leakage control and cleanable leakage cavit

1978-01-27

1982-08-17

Schwadron, Martin P.

Fluid handling

With cleaner, lubrication added to fluid or liquid sealing...

Cleaning or steam sterilizing

137312, 13761411, 13763022, F16K 144

Patent

active

043444539

ABSTRACT:
Apparatus for cleaning a liquid connection, securing a stroke and spring abutment for double-seat pipeline switches with leakage control, comprising two valve disks of different sizes which are movable relative to each other and independently of each other, the smaller valve disk facing away from a drive rigidly connected via a valve rod with a pipeline switch drive and, upon its lift motion after a given partial stroke, positively carrying along with it the other, larger valve disk, the valve rods of the valve disks pointing in the same direction and engaging telescopically into each other with the end of the hollow valve rod which concentrically surrounds the other valve rod receiving, outside the pipeline switch housing, in a form fitting manner, a pressing and guide part, equipped with a lower stop surface and spring abutment, the valve disks both in the closed position and in the open position enclosing between themselves a leakage cavity which is connected via openings with a discharge bore leading into the atmosphere and arranged within the other valve rod a housing part, which receives an upper spring abutment, an upper stop surface, and a connecting opening for cleaning liquid forming in cooperation with the pressing and guide part, a spring chamber within which a spring is arranged, tightly closed off from the atmosphere.

REFERENCES:
patent: 1724017 (1929-08-01), Godfrey
patent: 3643679 (1972-02-01), Hansson

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