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  #11  
Old 09-10-2019, 07:01 AM
cajunwings cajunwings is offline
 
Join Date: Jun 2007
Location: new iberia la
Posts: 768
Default Debris

Its not a bad idea to drain about a gallon of fuel out of the sump when you take the valve out. That volume and the higher flow rate may evacuate any debris that may be in there. Most tanks I’ve opened up have a little water or trash around the quick drain. That little squirt when we check sumps wont move particles any distance from the drain valve. On the planes I maintain the drain valves come out every other annual/CI for this reason and I usually see some crud. Clean fuel goes back in the tank.

Be Careful. I do this out on the ramp with the plane and drain container grounded.

Don Broussard
RV9 Rebuild in Progress
57 Pacer

Last edited by cajunwings : 09-10-2019 at 07:08 AM.
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  #12  
Old 09-10-2019, 08:47 AM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 5,297
Default

Quote:
Originally Posted by upperdeck View Post
Does this get better with time? I must have pulled and cleaned each drain 3 or 4 times! Always some tiny piece of debris, 40 hours or so on the airplane.
Yes. How lng depends on how much debris was left in your tank during the build. I put a valve on mine when i was draining for tank calibration. Have no problema since. As don mentioned, you need to get some real flow to flush out the crud.
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  #13  
Old 09-10-2019, 09:01 AM
NoPlugs NoPlugs is offline
 
Join Date: Apr 2012
Location: Houston
Posts: 6
Default S/S valve Replacement

SAF-Air makes a Stainless steel version (110SS) Its the very same valve but S/S the other valve is made old steel and CAD plated mine rusted and began to stick open a little. I ordered them direct from SAF-Air
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  #14  
Old 09-10-2019, 03:43 PM
OldTee OldTee is offline
 
Join Date: Oct 2009
Location: Centrerville, MD
Posts: 13
Default

`before you spend a lot of time, use an oil can and inject a small amount of engine oil into the valve. fixed a lot of drips on mooneys, comanches, cessnas, pipers and beeches this way.
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