Self cleaning valve

Details Self cleaning valve Self cleaning valve

1985-10-03

1986-12-09

Walton, George L.

Fluid handling

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

Cleaning or steam sterilizing

51241VS, 74 23, 74 8915, 744248VA, 1372432, 137331, 25112911, 251229, 251267, 464 40, F16K 2900, F16K 3150

Patent

active

046274618

ABSTRACT:
A self-cleaning valve has its closure member rotated against a valve seat during closing, by an externally threaded spindle rotated by an actuator. The spindle has a threaded portion screwed through an internally threaded collar which is pressed by a spring towards the valve seat. When the member engages the valve seat further rotation of the spindle causes the collar to ride up the spindle against the spring bias which maintains the closing force on the member while allowing it to rotate to clean the closing surfaces.

REFERENCES:
patent: 1232461 (1917-07-01), Eckenroth
patent: 1404103 (1922-01-01), Eckenroth
patent: 2996075 (1961-08-01), Deimer et al.
patent: 4177825 (1979-12-01), Crawford
patent: 4338961 (1982-07-01), Karpenko
patent: 4346728 (1982-08-01), Sulzer

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