초록 ▼

A butterfly valve provided within a disconnect of a fluid flow line, such as in a fuel dispensing system, incorporating a pair of decoupling members, at least one or a pair of butterfly valves mounted within and in proximity with location for disconnection of the conduit, the butterfly valve incorpo

A butterfly valve provided within a disconnect of a fluid flow line, such as in a fuel dispensing system, incorporating a pair of decoupling members, at least one or a pair of butterfly valves mounted within and in proximity with location for disconnection of the conduit, the butterfly valve incorporating a valve disk held by a retainer and which is spring biased for snapping into closure against its valve seat, when disconnection occurs, to prevent the further flow of fuel from the conduit, or in the instance where a pair of the butterfly valves of this design, are incorporated proximate each of the disconnect members, upon severance of the conduit or hose at this location, effecting an immediate closure of both butterfly valves, preventing the discharge of any further fluid from the remaining separated parts of the fluid conduit. The specific construction of each butterfly valve incorporates a set of projections that normally mount upon shoulders of the valve retainer, and upon release, and pivoting of the disc towards closure, the projections ride within formed grooves for guiding the valve disk into a fluidic seal against a conveniently disposed valve seat, and said projections further facilitating the reopening of the butterfly valve upon flow of the fluid in an opposite direction.

대표청구항 ▼

A valve means for application within a fluid flow line, and when maintained in open position providing for substanially free flow of fluid through said flow line, and when actuated into a closed position providing for obstruction of further flow of fluid through the flow line, said valve means compr

A valve means for application within a fluid flow line, and when maintained in open position providing for substanially free flow of fluid through said flow line, and when actuated into a closed position providing for obstruction of further flow of fluid through the flow line, said valve means comprising a butterfly valve, said fluid flow line comprising a fuel line normally accommodating the flow of fuel therethrough, a coupling means incorporating into the said fuel flow line, said coupling means comprising a breakaway coupling of separable ports and contained within the said fuel flow line, and said coupling means containing the said butterfly valve means therein, said butterfly valve of the valve means including a retainer means, a valve disk mounted for pivotal movement within said retainer means, a valve seat provided within said retainer means and operatively associated with the said valve disk, said valve retainer having a pair of opposing grooves formed therein, means holding said valve disk into its opened position during normal fuel flow, said means holding said valve disk into its open position comprising a wirelike means extending across the coupling, and means for releasing said valve disk from said holding means when said breakaway coupling separates and under the pressure of the flow of fuel urging the said valve disk into its sealing closure against its respective valve seat, means also biasing said valve disk into closure, said means comprising a springlike means, projections formed extending from each side of the said valve disk, said projections being multiple offset mounted in their extension from each side of the valve disk, said retainer means at the entrance to each groove having a shoulder formed thereat, whereby the valve disk projections resting upon the shoulders during normal fuel flow, and the projections entering into said grooves to attain closure of the valve disk upon its valve seat.