Things You'll Need:
- Pipe of appropriate thickness and material.
- Tools
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Step 1
Determine the location of the existing water supply shut off valve. In most cases, this will be very close to where the water supply enters the house. The valve usually has a basic wheel valve aperture closure. Test to see if you have the correct valve by closing it completely, then testing water spigots in other locations in the building.
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Step 2
Determine the materials you will need to replace the valve with. If the valve is on a straight piece of pipe, you'll need a straight replacement. If it is a 90 degree angle, you'll need a corresponding piece of pipe. Purchase the proper size and shape of pipe, and the correct materials you'll need to connect the pipe into the existing plumbing. Determining exactly what you'll need may require the removal of wall material and supporting wood working.
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Step 3
Turn off the water to the system at the water meter. It may be necessary to contact your local utility. Drain the system by opening all the existing spigots in the building. Then cut out the existing valve using tools appropriate to the type of pipe involved. Some water will drain out of the plumbing at this point. Be prepared.
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Step 4
Replace the valve with the replacement piece of pipe. Turn the water main back on and repressurize the system by closing the open spigot. Check carefully for leaks around the new joints.
