I seem to have a never-ending problem with the fuel quick drain valves.

Since completing my plane a year-and-a-half ago I have flush the tanks repeatedly.

I have removed and replaced the quick drain valves so many times its getting a little ridiculous.

Sometimes it's just one stuck piece of metal other times it doesn't seem to be anything at all that causes them to leak. I can't help thinking there's got to be a better fuel drain design and use Curtis valves.

It just makes no sense to me that's something so critical like a drain in the bottom of the fuel tank leaks over and over again.

I'm hoping there's another manufacturer or different design drain other than these Curtis ones. Does anyone have any ideas?

TIA

Gary

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Thanks for the update Gil. I appreciate it.

Is CAV-110 the p/n of your valve?  Given that I'm at the point of installing my fuel tank, I checked mine, given this thread.  My packet says it's a Curtis CCA-1800, so perhaps Zenith changed the drain?  Or is CAV-110 just Zenith's part number?

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