How to Connect PVC to a CPVC Pipe
Connecting PVC to CPVC (or ABS) pipe is actually quite easy if you feel comfortable in the plumbing arena. Although the pipes are made of similar material, they can't be coupled in the traditional manner with glue. Building codes in most states prohibit the gluing of two different types of pipe together. Does this Spark an idea?
Instructions
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Turn off the water supply. Do not attempt to work on any plumbing project without cutting the supply of water to that particular project area. Depending on the project, a water valve will be located nearby and can be turned off by hand. Some water leakage will occur when the line is cut.
If need be, shut off the structure's main. To do this, go to the lowest point in the house that faces the street. The main water entry will have a pipe that comes into the house, as well as a valve. Turn that valve clockwise until it is tight. Then, bleed the remaining water in the house by turning on a nearby faucet until water no longer comes out. This will have drained the water from the rest of the house.
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Create the connection. Make any necessary cuts to the pipe and remove any pipes, if necessary. Slip the Fernco coupler over the PVC pipe. Using one hand to steady the pipe and the other to move the coupler, work the pipe into the couple so it fills half the coupler. Repeat the process with the CPVC pipe. This will bridge the connection between the pipes.
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Tighten the screws on the coupler. Using the flathead screwdriver, tighten the screw clamps to ensure a snug fit. Restore water service to create the connection between the two pipes.
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Tips & Warnings
Some home improvement stores sell an adhesive claiming to work with PVC and CPVC or ABS pipe. Using this adhesive to connect the pipes is against most building and plumbing codes.
