I have a question regarding the installation of a 35.253.000 Grohsafe-enhanced flow pressure balancing valve. What it the recommended way of installing the valve to the 1/2" copper supply pipes? The shut off valves on the sides are 1/2-14NPT male X 1/2" copper sweat. Should I use brass drop ears on either side? If I would use 1/2-14 drop ears I could screw them to the studs. In this case how do you make a proper seal between the drop ear and the shut off valve since I would have to rotate the drop ear to a downward position. Do you have any suggestion?

Any help would be appreciated.

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Originally Posted by myhomereno

I have a question regarding the installation of a 35.253.000 Grohsafe-enhanced flow pressure balancing valve. What it the recommended way of installing the valve to the 1/2" copper supply pipes? The shut off valves on the sides are 1/2-14NPT male X 1/2" copper sweat. Should I use brass drop ears on either side? If I would use 1/2-14 drop ears I could screw them to the studs. In this case how do you make a proper seal between the drop ear and the shut off valve since I would have to rotate the drop ear to a downward position. Do you have any suggestion?

Any help would be appreciated.

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The only place we use a drop eared ell is on the shower raiser.
We come off the integral stops with 1/2" street ells and just below the valve place a piece of backing behind the supply lines and the drop line to the spout. We secure the valve with three pipe straps. One on each pipe. Your way would have the integral stops converting from thread to slip and then back to thread again to connect to the drop ear ells. Let's eliminate the threaded connections and go directly to the solder joints. Good luck, Tom