The shut-off valve are installed on fuel supply lines beneath at grade level to mini mize hazards associated with collision or fire at the dispenser. when the dispenser is pulled over or dislodged by collision, the top of the valve breaks off the flow of fuel. Singlep oppet models shut off supply flow, while double-poppet models shut off supply as well as prevent release of fule from the dispenser''s internal piping. We disigned different thread and size, please tell us your need, we will give you professional solution.
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