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  #11  
Old 11-13-2013, 11:28 AM
krw5927 krw5927 is offline
 
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Location: Wichita, KS
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Quote:
Originally Posted by bkilby View Post
Anyone have a part number for a plug to screw in the sump drain? Might be handy to have on a trip if you find a drain leaking and don't have another drain/o-ring to replace it
Any 1/8" NPT plug will do. Probably only a couple dollars at your local home improvement store in the aviation plumbing aisle.

If you want to spend a few more dollars for a drop-in replacement to have on standby in the repair kit, Spruce has them here:

http://www.aircraftspruce.com/pages/...rainvalves.php

It's part number CAV-110. Vans has them too, same part number.
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  #12  
Old 04-15-2014, 07:03 PM
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GalinHdz GalinHdz is offline
 
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I fought this issue for 5yrs. Then an A&P friend of mine suggested I change the regular brass fuel drain with a Stainless Steel fuel drain. I spent the extra $$$, bought a set of them and Viola, I have not had a fuel drain leak of any kind in the last 3 yrs.

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  #13  
Old 04-16-2014, 11:23 AM
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Noah Noah is offline
 
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What issue were you chasing? If you have some schmutz or an aluminum chip on your fuel drain O-ring causing a leak, how would a stainless version be any better than brass?
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  #14  
Old 07-20-2014, 11:14 AM
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jdeas jdeas is offline
 
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Default Long build time drain O-ring deterioration

After 'bumping' the drain several times after checking the sump I finally pulled the drains to clear any filings only to find both trash AND very bad O-rings.

After 7 years of building it never occurred to me that the O-rings would need replacement from just sitting in the parts bin. McMaster Carr Viton O-rings ordered
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  #15  
Old 07-20-2014, 09:22 PM
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rzbill rzbill is offline
 
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Quote:
Originally Posted by jdeas View Post
After 7 years of building it never occurred to me that the O-rings would need replacement from just sitting in the parts bin. McMaster Carr Viton O-rings ordered
Mine too. Phase 1. One started a solid stream of fuel right after a sump check prior to flight. Scrambled to come up with a 1/8" NPT capable plug.

On removal I found a completely dry rotted ring that broke into multiple pieces when I tried to remove it. The other wing was the same way. New O-rings plus spares in the travel kit.
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  #16  
Old 07-20-2014, 09:49 PM
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bhester bhester is offline
 
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Thumbs up Lowes has them

Should be a 1/4" NPT plug. Don't have a part number.
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  #17  
Old 01-26-2015, 07:50 PM
SHIPCHIEF SHIPCHIEF is offline
 
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My left tank quick drain gave out right after I read this thread. I replaced it with a 1/8" NPT pipe plug. I 'googled' BUNA N and Viton,
http://www.metrogasket.com/o-rings/m...tion_guide.htm the two common materials used in O rings. The BUNA is good to -40F to + 250. the Viton is -20F to + 400. They are both tolerant of ethanol and methanol, however the BUNA isn't so good with Acetone? I use Acetone to clean parts, so I might have killed the original O ring years ago when I built the wings, it just took this long to fall apart.
I got several of both, but I reassembled with the original type BUNA O ring. 1/4" OD, 1/8" ID 1/16" thick. Anyway, I have spares in my flight bag now.
I spilled maybe 2 or 3 tablespoons of gasoline making the change, the tank was more than 1/2 full. Just get everything ready and work fast.
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Last edited by SHIPCHIEF : 01-26-2015 at 08:02 PM.
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  #18  
Old 01-26-2015, 09:40 PM
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GeneL GeneL is offline
 
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Default Sump drains

For the proper stainless steel sump drains with the good O-rings check Safe Air CAV110 SS
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  #19  
Old 09-17-2015, 06:20 AM
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Saville Saville is offline
 
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When replacing a drain fitting, I take it that you do not use any kind of sealant on the threads. No tape.

Just use the bare fitting, correct?
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Last edited by Saville : 09-17-2015 at 08:15 AM.
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  #20  
Old 09-17-2015, 08:29 AM
Kyle Boatright Kyle Boatright is offline
 
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Location: Atlanta, GA
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Quote:
Originally Posted by Saville View Post
When replacing a drain fitting, I take it that you do not use any kind of sealant on the threads. No tape.

Just use the bare fitting, correct?
I use fuel lube.
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