The Emco Wheaton Double Poppet Vapour Shear Valve is used under the dispenser when installing a Stage II Vapour Recovery system to ensure vapours do not escape in the event of a collision to the dispenser.
EWA0063-EVR024
25mm (1”) x 38mm (1 ½”) Vapour Shear Valve
Emco A0063 Vapour Shear Valve pdf