Double seat valve

Details Double seat valve Double seat valve

1984-09-14

1986-08-12

Walton, G. L.

Fluid handling

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

Cleaning or steam sterilizing

137312, 13761417, 13761418, 13761419, 134166C, F16K 11065, F16K 31122, F16K 1110, B08B 304

Patent

active

046050353

ABSTRACT:
A double seat valve includes a valve housing and two valve closure members movable in the housing co-axially and relative to each other between an open and closed position. A leakage space defined between the closure members by a drain outlet. One of the closure members is a slide piston having an end portion sealingly received in a recess provided in the other closure member. The wall of the recess has an annular groove which permits a seal cleaning flow of liquid between the surfaces of the seal provided on one of the closure members and the annular groove into the leakage space.

REFERENCES:
patent: 4304251 (1981-12-01), Schadel et al.
patent: 4360039 (1982-11-01), Jeppsson
patent: 4373545 (1983-02-01), Knappe
patent: 4436106 (1984-03-01), Tuchenhagen et al.
patent: 4460014 (1984-07-01), Mases et al.

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