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Old 12-05-2017, 11:28 AM   #1
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In-line cutoff valve

Has anyone put an in-line cutoff valve in the toilet supply line? The reason I ask is that when camping the last time, after flushing the toilet for the first time out, I noticed a small puddle coming from the back of the toilet. I turned off the supply at the outside faucet and looked for a possible cause. I could not see exactly where it came from but it was either from the valve or from the connection to the valve. This was the only time it happened during that trip but when leaving the camper I would turn off the supply at the outside faucet. With my last camper there was a forum suggestion of a in-line cutoff valve so if in the event of a faulty toilet valve you could turn off the supply of water to the toilet, use the shower wand to flush the toilet and not have your trip spoiled by a water problem. I installed one and a new toilet valve in that camper (Casita) and fortunately never had to use the valve. I will be doing the same to this trailer but not being a plumber, I do not know the size of the line (Pex, I assume) that supplies the toilet. This is a Work and Play (275) and I would, there again, assume that the supply lines are a common size among all of Forest Rivers RV's. Does anyone know the size of the supply line that I need to purchase the valve for? I hope all of this makes sense.
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Old 12-05-2017, 11:46 AM   #2
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A shutoff valve is always a good idea if you don't already have a water manifold with individual shutoffs. If your water supply line is PEX then it is 1/2".
If you have a problem with the toilet leaking, why not take take the bowl of the base and inspect all connections and seals, this would be my 1st step anyways, it's actually pretty easy.

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Old 12-05-2017, 11:47 AM   #3
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All the ones Iíve seen are clear plastic with integral reinforcing cord. That slips over the inlet valve fitting with clamp. Sometimes it can be a threaded cap with gasket. Measure the OD of the hose or pipe to be cut and take that measurement to a hardware store and he can match what you want to do. Pex, PVC, Cpvc and hose all take different adaption fittings. Donít try to hose clamp Pex piping, it will leak.
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Old 12-05-2017, 01:09 PM   #4
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See here:

Toilet Shutoff Valve
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Old 12-05-2017, 01:18 PM   #5
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This method pictured is the reinforced hose.
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Old 12-05-2017, 01:18 PM   #6
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Did you have a water pressure regulator hook to the incoming line, or where you just using FW tank and pump ? Some CG's can have high water pressure that can cause leaks.

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