Toilet Water Inlet Leak on 2016 Minnie Winnie 31H

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Original Member Title: Toilet small leak at water inlet. 2016 Minnie Winnie 31H
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A member preparing for a trip discovered a small leak at the toilet’s plastic 90-degree water inlet in their 2016 Minnie Winnie 31H. They asked if the fitting was a standard size and whether a replacement could be found at Home Depot. Experienced RVers confirmed it’s typically a standard 1/2-inch PEX fitting, but noted that big box stores often lack the correct PEX clamps, recommending ACE Hardware or Amazon for spares. One member suggested tightening the fitting as a temporary fix, while...
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RREDD

New Member
Joined
Jul 20, 2025
Posts
5
Location
Utah
Leaving for a week in the morning and just saw a small trickle of water near the toilet. Good news is that it seems to be a failure of the plastic 90 degree inlet. Bad news is nothing is open tonight to get parts. Is it a standard size and would Home Depot have a compression fixture for the hose with a 90degree? Looks to be 1/2”, but I hesitate to cut the line and take it out if I don’t have a replacement. Any suggestions?
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I might guess standard part but the PEX connection is not one I like to deal with as I've not geared up to do the connection.
If it comes down to it, considered just working around it with a jug of water for flushing until you can do better?
Sure it is not just something that needs a bit of tighten?
 
It is standard 1/2 inch to PEX, the rubber inside usually deteriorates. Sometime you can try and tighten and will work, sometimes it gets worse. Usually cant find at Lowes or Home Depot, but sometimes at ACE Hardware Stores. I have had to change several some due to leaks but mostly due to upgrades, like new faucets and they always have worn out rubber seals, so I have bought from Amazon and have several spares on board.
 
Thanks. Found the 90 degree at HD, but couldn’t find correct size pex clamp. Found a great local shop the next morning who had the correct clamp and he fixed it for FREE. If you’re ever near Cedar City, Utah, and need help, check out Solitude RV repair. They are great!

In other news, I am on the trip but now have a small leak near the water pump and the toilet water inlet valve seems to be either broken or it needs to be cleaned. Used the city water hookup for the first time, so may have something happened from that. I love my used rv. (My mantra this week.)

Happy Thanksgiving and thanks for the help.
 
A small point that some can miss at times is how much the water pressure may change when we get near mountains! If we are not used to that, it can catch us not using a pressure regulator and when we get near a high spot and we are in the low, the pressure can be too much!
One might assume we would get a warning from the campground but that is letting somebody else take care of us??? Not always a good plan, so We try to do our own!

But that high water pressure can make things that are normally "good enough" be a real leaker when using the high pressure we get near those high places.
 

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