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Old 04-12-2021, 07:31 AM   #1
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2019 27' Globetrotter
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Mixing valve hose

I removed the mixing valve to clean debris from its screen on my water heater. 2019 Globetrotter, 27'. Water heater: GE 9 EXT WIPL. When I reassembled, the 9" hose (that apparently provides cool water to mix) has a tiny seep from the mixing valve end of it. It has a rubber gasket that compresses on the 1/2" brass fitting of the mixing valve. And it's tight. Any suggestions on stopping the leak ??

Dan
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Old 04-12-2021, 10:07 AM   #2
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Dan,

A pic might help of the seal thingy.

Is it conical black rubber sorta?

Gary
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Old 04-12-2021, 10:16 AM   #3
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If the fitting is tight enough then I would replace the gasket/o-ring/seal.
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Old 04-12-2021, 09:08 PM   #4
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The seal is a thingy exactly as Gary described !!! And it seems to be molded on / in the connecting nut. I installed the hose and pressurized the system and in about 3 hours a paper towel folded into 4 layers and placed below the fitting wasn't wet clear through. I'm thinking about squeezing some RTV silicone into the nut and installing. Let it set for overnight after installing and then pressurize and check again. Worst case - I have to buy a new one. Thanks for the responses.

Dan
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Old 04-13-2021, 04:38 AM   #5
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Dan,

Hardware or home center, plumbing it's possibly/likely a seal for PEX fittings. See sample from my PEX survival kit. Not sure if they sell the seal separately but a fitting has it. Showing one in place and one removed. And it just pops off.

Gary
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Old 04-13-2021, 07:11 AM   #6
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GCinSC2, I bought brass fittings, barbs and reinforced vinyl 3/8" hose with the intent of making my own hose assembly. The original appears to be about 1/4" hose so I was concerned that the mixing valve may not handle the larger ID hose I bought. But I could get 1/4" barbs to try. And the original assembly is only 9" long.

Dan
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Old 04-13-2021, 12:58 PM   #7
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Quote:
Originally Posted by Farmer Dan View Post
GCinSC2, I bought brass fittings, barbs and reinforced vinyl 3/8" hose with the intent of making my own hose assembly. The original appears to be about 1/4" hose so I was concerned that the mixing valve may not handle the larger ID hose I bought. But I could get 1/4" barbs to try. And the original assembly is only 9" long.

Dan


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Well ó hereís an unexpected result on my water heater hose. I fired up the heater for 20-25 minutes. Shut it off and had lunch. When I checked next time the joint was dry. The heat had migrated to the leaky fitting and stopped the leak. Now Iíll have to check to be sure the leak doesnít return when things cool down. I hope Iíve attached a pic of the hose !!
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Old 04-13-2021, 01:23 PM   #8
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Has anyone just eliminated the mixing valve?
My 2004 did not have one. My 2018 FC valve needs cleaning frequently and the hot pressure is never that great.
I would cap the cold feed and install an elbow in place of the mixing valve.
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Old 04-13-2021, 02:02 PM   #9
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That could cause a scald hazard. The mixing valve is there to mitigate that possibility. Filtering all the water that goes into the Airstream helps prevent clog issues.
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Old 04-13-2021, 02:04 PM   #10
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Now, that's an interesting idea !! I suspect the mixing valve is to prevent getting burned with hot water.

Dan
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Old 04-13-2021, 03:33 PM   #11
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In addition to preventing scalding, I have read that the mixing valve serves to increase the effective capacity of the water heater.
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