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Old 01-16-2017, 08:17 PM   #1
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Leaky Water Heater Bypass Valve, Help!

Hello all,

Just bought a fifth wheel trailer and first thing to go south is just a small leak coming from one of the water heater bypass valves. Below is the pic from the back, the far left.

Far right on the one below

Anyone have any experience replacing a bypass valve? is it a replacement job or just tightening? also how do i get that bracket off? any help would be appreciated thank you!
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Old 01-16-2017, 08:50 PM   #2
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Location: Cincinnati
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The clamps that hold the hose to the fitting are one time use clamps. If you carefully cut the clamp, without damaging the hose beneath, you should be able to replace the valve. You could use regular hose clamps or if you have access to one, the special tool that can fasten the compression rings like the originals.


Bob & Donna
'98 Gulf Stream Sun Voyager DP being pushed by a '00 Beetle TDI
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Old 01-17-2017, 05:27 AM   #3
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Simple job, Yes.

You can buy everything at your local big box hardware store, the both carry items you'll need if you want to stay with those type fittings. I'm not sure about the valve itself, if it's a standard velve yes if not, you may have to search for it. The crimping tool is a bit pricey for an occasional use.

You need to do a little research on how to properly connect and tighten those type clamps, plenty of info on net and utube.

I've switched to shark bites or similar on my plastic plumbing. I've used the in residential and now Rv plumbing with no issues.

I'm not clear if the valve is leaking or at the connection to the valve. You didn't mention the age of the rig. I've been replacing plumbing components on mine as connections fail, in your case I would probably replace all three valve and the pipe so I am not back at it in a few months, if it's an older rig.
Anthony & DW
2001 Ultimate Freedom
Cummins 350 ISC, Spartan MM GT Chasis
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Old 01-17-2017, 07:50 AM   #4
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You didn't mention where this valve is leaking, I'm wondering if you could try and tighten it a little on the fitting that has the little wings on it. Remember right is tight. Maybe it hasn't been snugged up like it could be. I'd try this before doing much of a tear apart and repair.
Ken in Nebraska
98 Fleetwood Pace Arrow, 35U
97 Ford F53 chassis
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heat, heater, leak, water, water heater

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