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

Go Back   iRV2 Forums > THE OWNER'S CORNER FORUMS > Tiffin Owner's Forum
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  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 02-04-2025, 02:18 PM   #1
Junior Member
 
Join Date: Jan 2025
Posts: 7
Water pump draw from fresh tank

2021 Allegro Bus 35CP

I noticed our fresh water tank was dry (was at 30%) while we were hooked up to water. My wife had the water pump on for more water pressure so I'm guessing the water pump only draws from the fresh tank and doesn't supplement the pressure when hooked up to water services?

Our last RV had the Nautilus system in it and was different from the Tiffin system.

Thanks!
Hawg Wild 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 02-04-2025, 02:40 PM   #2
Senior Member
 
Skip426's Avatar


 
Join Date: Apr 2011
Location: Powell River, B.C.
Posts: 34,170
You are correct , the 12 volt pump ( on most RVs ) only draws from the fresh tank and when boosting city water pressure will take water from the fresh tank.
__________________
99DSDP 3884, Freightliner, XC, CAT 3126B, 300 HP /ALLISON 3060
2000 Caravan toad, Remco & Blue Ox.
Skip426 is offline   Reply With Quote
Old 02-05-2025, 12:59 PM   #3
Junior Member
 
Join Date: Jan 2025
Posts: 7
Thanks Skip426! I appreciate it....
Hawg Wild is offline   Reply With Quote
Old 02-05-2025, 04:58 PM   #4
MFL
Senior Member
 
Join Date: Dec 2023
Posts: 779
When the pump pressure is higher than the city pressure, it closes the incoming check valve, so no city water coming in. If city pressure comes back up, more than pump pressure, it closes pump check valve, stopping water pump.

Does not hurt to have both turned on, but most cases, one does not supplement the other.
MFL is offline   Reply With Quote
Reply

Tags
pump, tank, water, water pump



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
Help!! Tank fresh water coming out fresh water hook up rvadventure Class A Motorhome Discussions 3 05-03-2023 08:15 PM
Does a water pump draw current when not in use? EricR RV Systems & Appliances 11 07-12-2020 04:25 PM
Water pump pumping water from fresh water tank into grey tank?? Amen Monaco Owner's Forum 16 09-13-2017 05:15 PM
Water pump electric draw when not pumping rsn48 Class A Motorhome Discussions 6 09-17-2016 10:55 PM
water pump from fresh water tank ljedik Class C Motorhome Discussions 2 06-30-2011 09:12 PM

» Featured Campgrounds

Reviews provided by


All times are GMT -6. The time now is 07:46 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2025, vBulletin Solutions, Inc.