PVC pipes and joint fittings are typically glued together with PVC solvent glue. These connections are quick and permanent, as the plastic parts are chemically fused together with solvent cement. The bad news is that if you get a leak in a PVC joint or pipe, you can't separate the joints to replace the leaky parts. A permanent repair usually requires cutting back the pipe and installing new couplings and replacement parts, or re-plumbing an entire section of piping. But if you have a leak in a PVC drain pipe, often you can repair it temporarily until there's time for a permanent fix. Drain pipes are not pressurized, which makes temporary repairs relatively effective.


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