Double seat valve with two valve disks

Details Double seat valve with two valve disks Double seat valve with two valve disks

1983-11-21

1989-08-15

Walton, George L.

Fluid handling

With leakage or drip collecting

134166C, 137240, 13761417, 13761418, 13761419, 1376372, 251332, F16K 1120, B08B 902

Patent

active

048565512

ABSTRACT:
A double seat valve includes a housing with a pair of valve disks independently movable within the housing between a closed position and an open position. Further, the valve disks can also be moved as a unit. A hollow leakage space is located between the valve disks. Leakage can be conveyed from the space to the exterior of the housing. Each valve disk has a separate valve seat and a cylindrically shaped wall surface extends between the valve seats and defines the radially outer boundary of the leakage space. A seal mounted in the first valve disk contacts the first valve seat in the closed position and moves in sealing contact with the cylindrically shaped wall surface as the first valve disk moves from the closed position toward the open position so that leakage losses from the valve are avoided.

REFERENCES:
patent: 4304251 (1981-12-01), Schadel et al.
patent: 4360039 (1982-11-01), Jeppsson
patent: 4368753 (1983-01-01), Brakelmann et al.
patent: 4373545 (1983-02-01), Knappe

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