stringfellow
Active Member
Perhaps I'm losing my mind but I posted this last night and I don't see the thread anywhere. In the event it was moderated out of existence, perhaps the mods could PM the affected so we're not left scratching our heads.
I'm installing an EFII system. The low point in my fuel system is not the wing tanks, it is the belly. I would like to add a sump drain on each supply line just before the fuel selector valve, but it was suggested by someone that in a high pressure system, it is conceivable that the spring-loaded Curtis valve could be partially opened by the high pressure flow in the line, introducing air.
I have a hard time believing this could be the case with the low cross-sectional area of a drain plunger. Can anyone shed any light on it? If it is an issue, were to find lock-closed sump drains?
I'm installing an EFII system. The low point in my fuel system is not the wing tanks, it is the belly. I would like to add a sump drain on each supply line just before the fuel selector valve, but it was suggested by someone that in a high pressure system, it is conceivable that the spring-loaded Curtis valve could be partially opened by the high pressure flow in the line, introducing air.
I have a hard time believing this could be the case with the low cross-sectional area of a drain plunger. Can anyone shed any light on it? If it is an issue, were to find lock-closed sump drains?
Last edited: