Thread Tools Search this Thread Display Modes
Old 09-02-2019, 02:33 PM   #1
4 Rivet Member
Eagle & Bear's Avatar
1976 29' Ambassador
Madison , Officially SD but are traveling full time.
Join Date: Sep 2007
Posts: 288
Images: 1
Air in fresh water lines

This is a 29' 1976 Airstream renovated for extended travel. Because the copper pipes were showing signs of previous freezing events I replaced all of the fresh water lines with Upanor PEX in 2010 and installed a new pump. The pump and lines functioned flawlessly.

When the first pump failed 18 months ago I replaced it with a new pump. It worked for the first year and then started putting out a mixture of air and water through the sink faucets and shower but there is no air mixed with the water coming out of the toilet spray handle.

The pump has been used for no more than a week each month and never been exposed to freezing temperatures. There is no air in the FW lines when hooked up to shore spigot but air enters the water from somewhere when I turn on the pump.

The pump primes its self. No cracks in the filter. No loose fittings on the input side. No signs of water leaking from any of the intake lines. I am at a loss as to where the air is entering the system but I can only presume that it is coming in from the intake side but again I can not see a leak in the lines. Any suggestions welcome. Thanks
Eagle & Bear is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
fresh water lines sunskr Plumbing - Systems & Fixtures 0 01-06-2016 01:04 PM
Question on Air Compressor Oil in fresh water lines myropa Plumbing - Systems & Fixtures 15 10-28-2013 01:20 PM
Noisy water lines when using fresh water tank Castaway Fresh Water Systems 14 12-17-2010 04:01 PM
Fresh water problem, air in the lines ????? polarlyse Fresh Water Systems 7 07-01-2009 08:07 AM
Leaks in fresh water drain lines Patsyj1 Plumbing - Systems & Fixtures 5 04-13-2007 07:55 AM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 10:36 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2020, Jelsoft Enterprises Ltd.