Automatic changeover manifold

Details Automatic changeover manifold Automatic changeover manifold

F - Mech Eng,Light,Heat,Weapons

17

D

162/23, 342/38

F17D 1/04 (2006.01) F17C 13/04 (2006.01) G05D 16/06 (2006.01)

Patent

CA 2026217

An automatic changeover manifold is described which permits an uninterrupted supply of fluid, for example, cryogenic liquified gas, from a source to a fluid delivery conduit. Liquid flow is controlled by solenoid-operated on-off valves which are switched from an open-condition to a closed-condition in response to a detected low pressure condition. When flow ceases in one feed line, the solenoid-operated valve in the other feed line opens. The electrical circuit prevents both solenoid-operated valves from being open at the same time, provided an electric current is present in the circuit .

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