|SAF-AIR designed its line of flush mounted fuel drain valves to be an exact replacement for the Auto Valve F391 line of flush fuel drain valves. Unlike the Auto Valve, SAF-AIR valves can be rebuilt. These valves offer a dependable, low-cost solution when a flush mount is needed. FAA & TSO-C76 approved|
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It is rebuildable and it uses oring MS29513-005.
This does not require an oring between the drain and the tank.