Multiple shut-off valve

A valve apparatus for simultaneously shutting off or opening two gas supplies, the apparatus comprising:

• (a) two valve bodies for mounting a distance apart from each other, each said body having an internal conduit therethrough for the passage of gas, and a lift valve within the conduit for closing or opening the conduit with reciprocation of the valve, the lift valve having a valve stem engagable externally from said each valve body, the lift valve being resiliently biased towards a closed position;
• (b) a pair of spaced-apart, parallel shafts between the valve bodies, each said shaft being fitted at each end in an aperture in one of the valve bodies and axially slidable within said apertures, permitting said distance between the valve bodies to be varied;
• (c) a manually movable first lever fitted on a first of the shafts, the first lever having a member connected thereto for engaging the valve stems, and a detent, the first lever being pivotable between an open position where the member engages the valve stems to open the lift valves and a shut-off position where the lift valves are closed;
• and
• (d) a manually movable second lever fitted on a second of the shafts for pivotting about the second shaft, the second lever having a notch for engaging the detent when the first lever is in the open position, the second lever being pivotable so the notch disengages from the detent, the first lever returns to the shut-off position, and the lift valves close.