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Step 17C) Temperature Stabilization: Do the Plumbing
First turn off the water at the main valve where it enters the house. If possible, empty the pipe by turning on a faucet (cold or hot--whichever you are installing the valve in) at a level below the shower, and turning on the shower. Then, with a bucket underneath the pipe, go ahead and saw through with a hack saw, and saw out the correct length of pipe needed to put the valve in with the fittings you are using.
Clean the outside of the pipe with fine sandpaper so that it will solder well. Unless the fittings are very new and shiny, clean the surfaces of them that you'll solder too, using sandpaper for the outside and a wire brush (or sandpaper) for the inside.
As you can see below, I'm not a pro at soldering plumbing. So rather than taking my advice on soldering, read the instructions that come with the solder and the torch. But even though my job is ugly, it doesn't leak, so don't be afraid of trying this is you aren't a pro either.
Solder one pair of elbows to the adapters that will thread onto the valve. Do this before attaching them to the valve, to avoid overheating the valve. Then assemble these assemblies onto the valve, using Teflon tape to ensure a good seal. Next assemble this onto the pipe using the other two elbows. First solder the elbows to the pipe, making sure the spacing is right to fit the valve assembly.
Before the final soldering pause and make sure you've got the flow direction right! (You want flow towards the shower.) Now solder the last two connections, taking care not to overheat and damage the valve.
Turn the water back on and check for leaks.
Clean the outside of the pipe with fine sandpaper so that it will solder well. Unless the fittings are very new and shiny, clean the surfaces of them that you'll solder too, using sandpaper for the outside and a wire brush (or sandpaper) for the inside.
As you can see below, I'm not a pro at soldering plumbing. So rather than taking my advice on soldering, read the instructions that come with the solder and the torch. But even though my job is ugly, it doesn't leak, so don't be afraid of trying this is you aren't a pro either.
Solder one pair of elbows to the adapters that will thread onto the valve. Do this before attaching them to the valve, to avoid overheating the valve. Then assemble these assemblies onto the valve, using Teflon tape to ensure a good seal. Next assemble this onto the pipe using the other two elbows. First solder the elbows to the pipe, making sure the spacing is right to fit the valve assembly.
Before the final soldering pause and make sure you've got the flow direction right! (You want flow towards the shower.) Now solder the last two connections, taking care not to overheat and damage the valve.
Turn the water back on and check for leaks.
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