Process for the simultaneous cleaning of both seat surfaces of a

Details Process for the simultaneous cleaning of both seat surfaces of a Process for the simultaneous cleaning of both seat surfaces of a

1984-08-23

1987-08-18

Nilson, Robert G.

Fluid handling

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

Cleaning or steam sterilizing

137240, 137312, 13761411, 13761418, F16K 2500

Patent

active

046870156

ABSTRACT:
A method and apparatus for simultaneously cleaning both seat surfaces of a double seat valve particularly adapted for use in the food processing industry is disclosed. The valve includes a pair of closing elements movable relative to the valve seats and to each other to define valve open and valve closed positions and a controllable stop and controllable connector which provide a partially lifted cleaning position in which both seat surfaces are simultaneously exposed to a cleaning agent while at least one of the closing elements continues to be in contact with product. The position of the closing elements relative to each other and relative to the valve casing is interlocked by the stop and the connector so that no cleaning agent enters the product side of the valve.

REFERENCES:
patent: 4304251 (1981-12-01), Schadel et al.
patent: 4344453 (1982-08-01), Tuchenhagen et al.
patent: 4368753 (1983-01-01), Brakelmann et al.
patent: 4373545 (1983-02-01), Knappe

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