Valve controlled by the same medium it handles and activated by

Details Valve controlled by the same medium it handles and activated by Valve controlled by the same medium it handles and activated by

1987-12-10

1988-11-29

Rosenthal, Arnold

Fluid handling

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

Cleaning or steam sterilizing

251 45, 251 38, F15B 13043, F16K 31383

Patent

active

047874112

ABSTRACT:
A valve controlled by the same medium it handles and released by a preferably electromagnetically activated control valve. Contaminants in the medium that clog up the control bore in servocontrolled valves that employ a differential piston, a relief bore that can be closed off with a control valve, and a control bore that connect a pressure connection with a control space prevent the valve from closing. A mechanism that is especially simple in design is proposed to constantly keep the control bore clean during operation. The control space accommodates a wire spring that rest against the differential piston and against the valve housing and extends through the control bore. The motion of the piston is accompanied by a relative motion between the control bore and the spring that results in a constant cleaning action. The valve is especially practical in water lines and has the advantage of constant self-cleaning on the part of the control bore. When the spring is appropriately tensioned, it is impossible for the valve to open subject to reverse pressure. The spring also creates an electrically conductive metal connection through the control bore.

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