Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 04-20-2021, 09:04 PM   #1
1 Rivet Member
2019 27' Globetrotter
Bellevue , Washington
Join Date: May 2018
Posts: 8
What does this valve do? 2019 GT 27 FB

We have a 2019 Globetrotter 27 FB. I am de-winterizing it. But I don't know what the WHITE valve (that I have put 2 red boxes around in the picture) does.

I have closed the yellow valve which according to the manual is the bypass valve. But I cannot find any info in the manual about the white valve in the picture. When you close the BYPASS (yellow valve) do you OPEN the white valve? And what position should the white valve be in for normal operations?? I had someone helping me and now I don't know what position to have the white valve in. Thanks you in advance!
Attached Thumbnails
Click image for larger version

Name:	What is this valve.png
Views:	9
Size:	1.46 MB
ID:	393680  
dlykken is offline   Reply With Quote
Old 04-20-2021, 09:27 PM   #2
3 Rivet Member
Downhill502's Avatar
2020 27' Globetrotter
Fredericksburg , VA
Join Date: Oct 2019
Posts: 101
What does this valve do? 2019 GT 27 FB

Hi there, you are correct that the yellow valve is your water heater bypass.

Your lower positioned white valve is a low point drain. You will treat this the same as the two brass low point drains that are under the trailer near your fresh water tank drain. It is now in the open position. Turned 90 degrees will close the valve ie normal operation for water use. You will open this valve to purge residual water prior to adding rv waterline antifreeze or open it during an air purge if that is your preferred winterizing method.
Downhill502 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 01:10 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.