Control system for suction valve of vacuum dehydration...

Details Control system for suction valve of vacuum dehydration... Control system for suction valve of vacuum dehydration...

F - Mech Eng,Light,Heat,Weapons

16

K

137/24

F16K 31/00 (2006.01)

Patent

CA 1073317

CONTROL SYSTEM FOR SUCTION VALVE OF VACUUM DEHYDRATION INSTALLATION ABSTRACT OF THE DISCLOSURE A control system for the suction valve of a vacuum dehydration installation is provided which causes the valve to open when the incoming sewage in an associated sewage system reaches a pre- determined level and which closes after the suction valve causes the drawing off by suction of a selected quantity of water and a further quantity of air following the water. The control system controls the opening and closing of the suction valve responsive to an air cushion located in a riser which is, for example, connected to the gravity line of a building or the like the gravity line serving as a collecting tank for sewage. This arrangement prevents corrosion and other problems associated with conventional actuators.

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