Joe Larussa Posted August 29, 2019 Report Share Posted August 29, 2019 Anyone out there replace their wing drains that have bladders? Is that a special part? Looks like it’s installed into the bladder with a hose clamp? Quote Link to comment Share on other sites More sharing options...
jetdriven Posted August 29, 2019 Report Share Posted August 29, 2019 F391-18 drain valve from aircraft spruce. Threads into the NPT threads into the plate in the bottom of the wing. 1 Quote Link to comment Share on other sites More sharing options...
Joe Larussa Posted August 29, 2019 Author Report Share Posted August 29, 2019 1 hour ago, jetdriven said: F391-18 drain valve from aircraft spruce. Threads into the NPT threads into the plate in the bottom of the wing. Is there a trick to getting these out? Quote Link to comment Share on other sites More sharing options...
takair Posted August 29, 2019 Report Share Posted August 29, 2019 5 hours ago, Joe Larussa said: Is there a trick to getting these out? Mine came out rather easily, remove the safety wire and lefty loosey. Are yours stuck? Quote Link to comment Share on other sites More sharing options...
Marauder Posted August 29, 2019 Report Share Posted August 29, 2019 8 hours ago, Joe Larussa said: Is there a trick to getting these out? Joe - as Rob mentioned, cut the safety wire and lefty loosey. You will want to replace it with this part: https://www.aircraftspruce.com/catalog/appages/curtisflushmounted_05-04885.php?clickkey=204281 I replaced mine last year. Don't over torque it. You will need to a fuel sealant that doesn't have a hardening agent in it. Quote Link to comment Share on other sites More sharing options...
Joe Larussa Posted August 29, 2019 Author Report Share Posted August 29, 2019 3 hours ago, takair said: Mine came out rather easily, remove the safety wire and lefty loosey. Are yours stuck? That’s what I thought, just thought there might be something special because I have bladders and there’s a hose clamp. Quote Link to comment Share on other sites More sharing options...
jetdriven Posted August 29, 2019 Report Share Posted August 29, 2019 (edited) The installation shows the bladder hose clamps to the backside of a metal plate which has a NPT fitting for the valve. . That is riveted to the wing skin. So you have a valve going into a fitting. Post a photo. You really want to be careful here. Because if that fuel drain is simply rubber hose clamp to the bottom of the bladder, that’s a pretty serious issue Edited August 29, 2019 by jetdriven Quote Link to comment Share on other sites More sharing options...
Joe Larussa Posted August 29, 2019 Author Report Share Posted August 29, 2019 46 minutes ago, jetdriven said: The installation shows the bladder hose clamps to the backside of a metal plate which has a NPT fitting for the valve. . That is riveted to the wing skin. So you have a valve going into a fitting. Post a photo. You really want to be careful here. Because if that fuel drain is simply rubber hose clamp to the bottom of the bladder, that’s a pretty serious issue Here's a pic. Quote Link to comment Share on other sites More sharing options...
jetdriven Posted August 29, 2019 Report Share Posted August 29, 2019 Ok. Unscrew the valve from the plate. 1 Quote Link to comment Share on other sites More sharing options...
carusoam Posted August 31, 2019 Report Share Posted August 31, 2019 Great pic, Joe! that helps a lot... Best regards, -a- Quote Link to comment Share on other sites More sharing options...
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