Valves and valve actuation – With means to increase head and seat contact pressure – Seat pressed to valve
Patent
1986-01-10
1988-06-07
Walton, George L.
Valves and valve actuation
With means to increase head and seat contact pressure
Seat pressed to valve
251327, 251328, 126285A, 138 943, F16K 320, F16K 2500
Patent
active
047491680
ABSTRACT:
In a sealing mechanism for a damper plate for a duct, seal members are made in the form of multi-convoluted sheet metal bellows, which engage each side of the damper plate around the periphery of the duct. When the duct is moved from an open position to a closed position, it slides between the seal elements forcing them apart. When the plate is slid from a closed position to an open position, the spring bias in the bellows members will cause them to expand to engage each other.
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Broyles Robert K.
Maxwell Ronald K.
Pathway Bellows, Inc.
Walton George L.
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