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When connecting a new PVC elbow to an existing PVC T-Pipe, is there any special technique required or any materials (such as plumber's putty) required to complete this task?

I'm imagining it's very simple, but since I've never done this, I am choosing to ask before jumping in.

The piping is the drainpipe for a sink, after the garbage disposal.

Photo of the plumbing layout: Photo of the plumbing layout

Thanks.

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1 Answers1

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You should only join same type fittings with the correct cement. PVC is white, CPVC is almost tan or dark off white, ABS is black.

The threaded PVC-like fittings (they are actually polypropylene) use a silicone or plastic compression gasket or fitting to seal the connection.

Plumber's putty is not durable enough to seal two fittings. The various pipe cements actually fuse the two pieces into one. Even the minute vibrations from a garbage disposal would cause the plumbers putty seal to break.