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Old 02-27-2021, 03:49 PM   #1
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2019 28' Flying Cloud
Dripping Springs , Texas
Join Date: Dec 2019
Posts: 296
DIY pressure test & 'blow out' valve

I didn't winterize my AS and learned the hard way about ice damage. To diagnose the problem I created a gauge & valve combination, will share the parts list here.

Advantages:
- Can be used as a pressure gauge for leak testing
- May also be used as a 'blow out' air inlet
- No separate ball valve needed to turn off air, regular Shrader valve is used
- Very compact design

Assembly:
- Just screw everything together, use pipe tape
- The gauge has a valve but I just used a dab of epoxy to glue it open. It is NOT a pressure regulator

Use:
- Screw it into your fresh water inlet
- Use an air compressor with a tire inflator to pressurize (eg. 30psi, max 40psi)
- Empty your system by opening a faucet


Parts, all from Home Depot








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Old 02-28-2021, 01:07 PM   #2
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1972 25' Tradewind
1976 31' Excella 500
1974 31' Excella 500
1975 24' Argosy 24
Denver , Colorado
Join Date: Jul 2015
Posts: 1,012
If your air compressor already has a gauge and you have quick connect fittings, something like this is great as well...
https://www.amazon.com/Litorange-Lea...dp/B07KWXVRSL/

edit: but I usually unhook my water pump (and take it inside) and blow from there rather than the city hookup... the best place will vary by trailer setup.
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Old 02-28-2021, 01:11 PM   #3
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1977 31' Sovereign
Rochester , WASHINGTON
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I got baited in, I thought this was a tire thread
Carry on!
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