You will want to use the YS check valve....The Perry may work, But the YS check have a fairly low pressure to close. many of the check valves on the market have a ball bearing in them and it takes too much pressure to close them off. This doesn't allow for the engine to build pressure.


This could also be your problem. I have no experience with the perry...but if it doesn't close fast enough (blow test is not good enough) then it will likley not close until pressure gets higher in the tank. Since the pressure ina YS builds slowly you need the YS style of check valve.


Troy Newman
Team YS