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

Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > MOC Technical Forums > Maintenance
Click Here to Login

Thread Tools Search this Thread Display Modes
Old 02-19-2022, 09:29 AM   #1
Seasoned Camper
Join Date: Jun 2013
Location: Quincy
Posts: 68
M.O.C. #13543
water valve nomenclature??

2013 3150RL - I have water getting by the valve that lets you select between your city water hose connection to the RV. Normal position applies pressure to the trailer and Fill position routes water to the fresh water tank. Over time with the valve in the Normal position to go to the trailer, water will start coming out of the fresh water overflow. As the valve is not working correctly I would like to replace it.

Can someone help with the correct nomenclature for the valve so I can search??
rickbecker is offline   Reply With Quote
Old 02-19-2022, 09:40 AM   #2
Carl n Susan
Site Team
Carl n Susan's Avatar
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 6,077
M.O.C. #4831
I would not jump to the conclusion it is the valve (whatever the proper name is). Much more likely is the check valve in the water pump is leaking and allowing shore supplied water to back flow into the fresh water tank.
Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB

Carl n Susan is offline   Reply With Quote
Old 02-19-2022, 09:48 AM   #3
Seasoned Camper
Join Date: Jun 2013
Location: Quincy
Posts: 68
M.O.C. #13543
Thank you for that! Had not entered my thought process and much easier to check than changing that valve!

I will post what I find.

rickbecker is offline   Reply With Quote
Old 02-19-2022, 11:11 AM   #4
AZ Traveler
Site Team
AZ Traveler's Avatar
Join Date: Sep 2017
Location: Oro Valley
Posts: 3,212
M.O.C. #20477

I have changed 2 water pumps for the same issue. Fairly easy task.
Zack and Donna plus Millie and Ranger
2018 3160RL

"Life is too short to stay indoors, enjoy the ride!"
AZ Traveler is offline   Reply With Quote
Old 02-19-2022, 04:34 PM   #5
Montana Master
rohrmann's Avatar
Join Date: Oct 2012
Location: Box Elder
Posts: 4,030
M.O.C. #12947
If your pump still works, a cheaper and possibly easier fix would be install a check valve in the pump pressure side line. This will not affect the performance of the pump and will permanently fix the issue. I made this fix years ago while at the rally at Seven Feathers in 2014. Originally, I had installed the check valve on the suction side of the pump, where the white coupling is behind to the left of where the brass check valve is in the photo. I discovered the suction side fittings can not handle the pressure and I had a water leak at the pump. I replaced the original check valve with the coupling and installed a new check valve in the pressure side line and have had no issues with the tank filling past the internal check valve of the pump. All the new fittings are shark bite type fittings.
Attached Thumbnails
Click image for larger version

Name:	new check valve.jpg
Views:	22
Size:	65.0 KB
ID:	11389  
Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
rohrmann is offline   Reply With Quote
Old 02-19-2022, 05:40 PM   #6
Montana Master
DutchmenSport's Avatar
Join Date: Oct 2018
Location: Anderson
Posts: 1,554
M.O.C. #22835
Before doing anything, check on all the screws on your water pump, especially the 4 long screws holding on the pump propeller assembly. I had a similar problem with a previous trailer and discovered that 2 of the screws (bolts) were completely missing, the 3rd one was barely hanging on and the 4th one was far from snug tight. I found 1 of the missing bolts laying on the floor and the 4th one I never found. I think it fell out and dropped through the floor where the hoses came up through the floor.

I ended up buying a new pump, identical to the original, except a newer version and never had a problem with back flow again. I still have that old pump, but it's still missing a screw. It works fine, and maybe someday I'll figure out something I can use it for that's not installed into something permanet. I'll never trust it to not leak now.

Anyway, check on the bolts and screws on yours before doing anything. It's possible one or more is just loose letting water back flow past the seals. That's the FIRST thing to check. If all is well there, then consider the check valves.
To plant a garden is to believe in tomorrow.
2019 Montana High Country 375FL
2014 Chevy Silverado Duramax, 6.6L Dually
DutchmenSport is offline   Reply With Quote
Old 05-20-2022, 11:15 AM   #7
Seasoned Camper
Join Date: Jun 2013
Location: Quincy
Posts: 68
M.O.C. #13543
Water pump reccomendation

Looking like I need to replace the water pump. Using this one -
Flojet R4426143A-12V VFLO 5.0 Constant Flow Water Pressure Pump - 5.0 GPM, 12VDC at the moment and still available from Amazon for $240. I like the pump (when it works!) and will probably get another unless one of you fine folks has newer / better etc. recommendation.

Any advice is appreciated!

rickbecker is offline   Reply With Quote

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
Forum Jump

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 11:28 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2022, vBulletin Solutions, Inc.