Gate valve construction

Details Gate valve construction Gate valve construction

1984-06-19

1985-06-11

Walton, George L.

Fluid handling

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

Cleaning or steam sterilizing

251328, 137244, F16K 330, F16K 2500

Patent

active

045222240

ABSTRACT:
The slanted closing rim of a valve plate includes a cylindrical portion at the rear side, having a diameter D1 which corresponds to the width of the plate and slightly exceeds the diameter D3 of the passage throat. A groove in the casing guides the narrow sides of the valve plate and accomodates a seal strip. The grooves partly closed at the front side by a guide strip which in the bottom zone of the passage throat is a semicircularly extending strip. The inside diameter D4 of this cylindrical strip approximately corresponds to that of the valve plate and its axis a extends at a level which is higher by half the difference between diameters D1 and D3 than that of the axis b of the throat passage. A slanted closing rim of the valve plate is provided with shear arcs on its frontal points on each of the side edges. The two shear arcs form a kind of a plowshare deflecting the medium from the seal.

REFERENCES:
patent: 2001271 (1935-05-01), Smith
patent: 2669416 (1954-02-01), Hilton
patent: 2982295 (1961-05-01), Williams
patent: 3207471 (1965-09-01), Williams
patent: 4112969 (1978-09-01), Still
patent: 4201365 (1980-05-01), Paptzun et al.
patent: 4429710 (1984-02-01), Grieves et al.

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