Journey with Confidence RV GPS App RV Trip Planner RV LIFE Campground Reviews RV Maintenance Take a Speed Test Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 11-09-2020, 07:14 AM   #1
New Member
jemison , Alabama
Join Date: Nov 2019
Posts: 3
What does this valve do?

We have a new to us 1996 airstream classic and when I checked my manual about the black tank flush it mentions this valve under the bathroom sink but doesn't really explain what I should do with it. Thanks in advance for your help.
Attached Thumbnails
Click image for larger version

Name:	20201109_080042.jpg
Views:	19
Size:	207.1 KB
ID:	382852  
lisabass1992 is offline   Reply With Quote
Old 11-09-2020, 07:31 AM   #2
Rivet Master
A W Warn's Avatar
2000 25' Safari
Davidson County , NC Highlands County, FL
Join Date: Aug 2006
Posts: 4,468
It looks like a vacuum breaker.
If it is, there is nothing for you to do.
Its a valve that lets air into a place that might hold water because a vacuum is created (usually the tank flush)

If you can look at the printing on the cap it will tell you what it is.
2014 Silverado LTZ 1500 Crew Cab 5.3L maximum trailering package
A W Warn is offline   Reply With Quote
Old 11-09-2020, 09:30 AM   #3
New Member
jemison , Alabama
Join Date: Nov 2019
Posts: 3
Thank you. I really appreciate your help.
lisabass1992 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
What does this valve do? RAH Fresh Water Systems 1 06-27-2013 04:52 PM
Charge wire on 7-pin, what demands does AS need and how does this charge starcraft Batteries, Univolts, Converters & Inverters 10 04-20-2012 08:38 AM
What does this valve do? Becky B. Fresh Water Systems 5 07-17-2009 04:17 PM
How does this valve even operate? OregonArgy Waste Systems, Tanks & Totes 5 04-12-2008 09:29 PM
Why does front A/C have drain hose but back A/C does not? AccessMaster Airstream Motorhome Forums 9 06-22-2003 07:15 PM

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.

All times are GMT -6. The time now is 08:15 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2022, Jelsoft Enterprises Ltd.