Fluid handling – With cleaner – lubrication added to fluid or liquid sealing... – Cleaning or steam sterilizing
Patent
1975-07-16
1977-05-03
Weakley, Harold W.
Fluid handling
With cleaner, lubrication added to fluid or liquid sealing...
Cleaning or steam sterilizing
251172, 251174, F16K 1500
Patent
active
040208648
ABSTRACT:
In one exemplar embodiment, an improved ball valve is provided in which a movable seating ring is concentrically carried by the inner diameter of a spring washer concentrically disposed in the inlet port of the ball valve housing. The spring washer is retained in place about its outer diameter portion by means of a retaining ring removably inserted in the inlet port of the valve body. The spring washer is sealed to the valve body by means of a conventional circular seal disposed between the face of the spring washer and the valve body. When the valve is closed, the differential pressure developed across the ball acts on the outer surface of the spring washer and transmits additional sealing force to the seating ring in contact with the ball for increased sealing. The surface of the retaining ring facing the spring washer is conical to form a wedge-shaped void therebetween to permit movement of the spring washer and seating ring even though solid particles from the fluid stream accumulate between the retaining ring and spring washer.
REFERENCES:
patent: 1116741 (1914-11-01), Roney
patent: 2573177 (1951-10-01), Bohlen
patent: 2890856 (1959-06-01), Clade
patent: 3333813 (1967-08-01), Rabe
patent: 3394915 (1968-07-01), Gachot
patent: 3520512 (1970-07-01), Huber
patent: 3591134 (1971-07-01), Fujiwara
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