Butterfly valve structure and a sleeve therefor

Details Butterfly valve structure and a sleeve therefor Butterfly valve structure and a sleeve therefor

1978-01-27

1980-10-14

Cline, William R.

Valves and valve actuation

With means to increase head and seat contact pressure

Seat pressed to valve

251306, F16K 1226

Patent

active

042276756

ABSTRACT:
In this butterfly valve structure having an elastic sleeve, an outer projection of the sleeve in the free state has the same sectional shape as a groove in the body of the valve. The radial thickness of the seat is at least equal to ten times the depth to which the valve member, when closed, penetrates into the seat. The depth of the groove is at least equal to 4/10 of the minimum radial thickness of the seat. The axial length of the bottom of the groove is of the same order of magnitude as that of the seat. The corners of the groove are rounded. This valve structure is of particular advantage for high temperature and/or when the valve member remains closed for a prolonged period.

REFERENCES:
patent: 1990309 (1935-02-01), Phillips
patent: 3343805 (1967-09-01), Felton
patent: 3603341 (1971-09-01), Scaramucci
patent: 3633872 (1972-01-01), Wright
patent: 3656712 (1972-04-01), Bertrem
patent: 3666233 (1972-05-01), Scaramucci
patent: 3675677 (1972-07-01), Scaramucci
patent: 3776509 (1973-12-01), Leblond
patent: 3779512 (1973-12-01), Scaramucci
patent: 3790130 (1974-05-01), Getty, Jr.

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