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Old 04-25-2010, 08:04 PM   #1
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Leaky valve... really frustrated.


I am plumbing a new shower with multiple shower heads. One of the Grohe 3/4" volume control rough valves has a very small leak. The valve has female threads, which I have connect a 3/4" copper male threaded fitting. I've disassembled and reassembled it twice already. Is there any way to stopped the leak without having to disassemble everything. I really don't feel like having to cut the pipe, drain all the water from the lines to be able to connect the valve threads again.

BTW, I am using Rectorseal pipe dope on the threaded connections. I gooped it on pretty thick on both male and femeale threads and tighten them up good. The other two valves and thermostatic control valve are leak free so I am not sure why this one is giving me such a task.


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Old 04-25-2010, 08:13 PM   #2
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Leaky valve... really frustrated.


Try teflon tape along with the Rectorseal.

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Old 04-25-2010, 08:29 PM   #3
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Leaky valve... really frustrated.


You may have heated the threaded fitting while soldering near by--Use tape and dope and solder as far away as possible---wrap a wet rag around the pipe and fitting to keep it cool.--Mike--
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Old 04-25-2010, 08:56 PM   #4
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Leaky valve... really frustrated.


Mike... Wouldn't doubt that I did heat too much. It's pretty tight. I did use the wet rag but still, probably got too hot.

It's really a slow leak. Almost more like the thread is sweating than a leak. I watch it for over 10 minutes and it wasn't enough to form a drop in that time. I'm going to watch it overnight to see if it stops. If still wet tomorrow I will have to break down and redo it.
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Old 04-26-2010, 07:06 AM   #5
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Leaky valve... really frustrated.


Heating near a threaded fitting causes the fitting to swell and squeeze out the dope----

On nasty spots like that --there have been times that I have--drilled and rerouted the piping--
added a union---used a compression fitting--sworn like a drunken sailor--

You will find a way--don't get your hopes up on the drip going away--You know you will be redoing it--

Good luck----Mike---
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Old 04-26-2010, 11:36 AM   #6
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Leaky valve... really frustrated.


While muttering 100's of curse words under my breath, I shut the water off, cut the pipe, drained the water, unsoldered the fitting, gouped it up again with pipe dope, rethreaded it, soldered everthing back up and turned the water back on. So far, no leaks. Did this last night. At the office now so we'll see if it's still leak-free when I go home for lunch.

Keep your fingers crossed for me.

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