Go Back   iRV2 Forums > TRAVEL TRAILER, 5th WHEEL & TRUCK CAMPER FORUMS > 5th Wheel Discussion
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
Thread Tools Search this Thread Display Modes
Old 01-19-2016, 11:09 AM   #1
Junior Member
Join Date: Dec 2015
Posts: 4
2000 Keystone roof things

On top of my 2000 Keystone Montana there are a couple of small wind directional gadgets with propellers on them. I have no idea what they are. Any help? Thanks

oldcobia is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 01-19-2016, 01:00 PM   #2
Senior Member
cashmore's Avatar
Join Date: Apr 2015
Location: CO
Posts: 125
They are likely to suck the gasses out of the black tank(s) so that it keeps the smell down inside. I can remember the name of them but they sit atop the vent pipe for the wait tanks.

Montana Mountaineer 345DBQ
2016 Ford F-350 DRW -- Retired 2002 F-350 DRW
cashmore is offline   Reply With Quote
Old 01-19-2016, 01:09 PM   #3
Senior Member
Join Date: Nov 2015
Posts: 1,782
Just a venturi cap for waste tank vent lines.

Air flows across front of cap and creates a negative pressure zone behind cap which draws air/gasses/odors out of waste tanks..venturi effect

Normal cap

Venturi cap

Solar cap......small fan inside

And then you have your homemade venturi effect cap.......1 1/2" PVC Tee
Course it doesn't rotate like the Cyclone Model

Old-Biscuit 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
Front and Rear Cap Roof Seam Repair rmcb Monaco Owner's Forum 10 10-21-2015 11:29 PM
Rubber roof JWLSC Fleetwood Products Owner's Forum 2 10-19-2015 06:32 AM
CAMCO RV Roof Cleaner and Treatment Big-Foot iRV2.com General Discussion 6 09-30-2015 06:30 AM
New rubber roof, just replaced, same issues 1010 Outdoors RV Owner's Forum 8 11-20-2014 01:05 PM
Roll-on bed-liner roof project 99 Starcraft 5th Wheel Discussion 14 10-03-2014 03:29 PM

» Virginia Campgrounds

Reviews provided by

Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities

Copyright 2002-2015 Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 02:38 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.