Emergency shutoff valve for use in a fuel dispensing system

Details Emergency shutoff valve for use in a fuel dispensing system Emergency shutoff valve for use in a fuel dispensing system

F - Mech Eng,Light,Heat,Weapons

16

K

F16K 31/44 (2006.01) B67D 7/32 (2010.01) B67D 7/36 (2010.01) B65D 90/22 (2006.01)

Patent

CA 2605139

An emergency shutoff valve is provided that includes a housing defining a fluid inlet, a fluid outlet and a fluid flow passage extending therebetween. The valve includes a valve element disposed within the housing and releasably latched in an open position by a latching mechanism. An expansible member defines at least a portion of a sealed expansible chamber that is sealed at locations downstream and upstream of a weakened portion of the housing. The emergency shutoff valve defines a failure mode wherein the structural integrity of the housing is compromised to an extent wherein fuel can flow into the expansible chamber when a predetermined load is applied to a portion of the housing, wherein the expansible member is operable for uncoupling the latching mechanism so that the valve element moves from the open position to the closed position.

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