F - Mech Eng,Light,Heat,Weapons – 16 – K
Patent
F - Mech Eng,Light,Heat,Weapons
16
K
137/66
F16K 25/00 (2006.01) F16K 1/44 (2006.01)
Patent
CA 1157345
ABSTRACT The invention relates to a new method and apparatus for the simultaneous cleaning of both seat-surfaces of a double-seat valve of which at least one side thereof is in contact with a liquid product which is flowing through the system in which the valve is located. Prior to this invention, it was not possible to clean the seat-surface of the closure-member which was in contact with the product at the same time as the other closure-member was being cleaned. The invention will be particularly useful in the food processing industry as the valve ensures that while the pipeline system on the one side of the valve is being cleaned, none of the cleaning agent reaches the pipeline system on the other side of the valve. The valve is equipped with two closure- members at least one of which is a slide and the other one of which is a slide or in the form of a seat-plate, said closure members being moved by an actuating means, either independently or together. When the cleaning of the piping system on one side of the valve is taking place, the invention ensures no cleaning agent enters the other side of the valve. By means of a partial stroke of one valve-stem and a stop determining the position of the other valve- stem, cleaning of the valve can be carried out when the monitor signals the valves are in a closed position.
382105
Fetherstonhaugh & Co.
Tuchenhagen (otto) G.m.b.h. & Co. Kg
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