Mixing valve problems: plumber time?

Old 06-25-16, 08:01 AM
maarkr's Avatar
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Mixing valve problems: plumber time?

My mixing valve for a toilet is apparently clogged up... barely any water flow. I tried to turn the screw slots on top but they broke off. This thing is abt 30 yrs old. If you look at the pic, there is only abt an inch from the cold water T (to the shower in the other bath) to the elbow, and right next to the floor joist. So how can I cut that off? no room for a small pipe cutter... and a sawzall would prob make it so I can't attach a fitting to the pipe. Capping off the hot doesn't look terribly hard... I thought it best to do away with the mixing valve for the future and run straight cold to the toilet.

Any ideas to fix this or is it time to have a plumber come in?

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Old 06-25-16, 07:38 PM
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Sawzall with a fine-toothed metal blade will work just fine. It'll need some sanding and deburring afterwards, but unless you're very aggressive with it, you should have no problem making a new connection.

You'll definitely need to put a piece or sheet metal or something between the pipe and joists when re-soldering though!

Old 06-25-16, 09:48 PM
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Very busy area.... you have electrical wires to be conscientious of too.
A flame protector pad would come in handy.

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