Product reviews for Aluminium Non Return Valve 6mm

Used in fuel delivery line to twin SU's fed via electric fuel pump, keeps system full when car un-used & gives much quicker start up

I've used this item to prevent fuel drain back (siphoning) after running.  This used to result in a long cranking time to re-fill the fuel system when the vehicle was unused for more than a few days.  Non-return valve immediately solved this problem, user - and battery - much relieved!