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Types of waste pipe

There is a large variety of systems for plastic waste pipes. Unfortunately, because of the differences in their they can not always interchangeable. When extending or adapting an existing plastic waste set up, be sure to either buy the same / compatible type or, if buying a different type, be sure to get suitable adapters for the change-over point. There are four main sizes available, each with their own intended use. A Chingford Plumber can fit them all. The main categories are outlined below:
21mm – overflows32mm – hand basin waste40mm – baths and sinks110mm – soil pipes.

Fittings for joining pipe.
There is a big range of these fittings because waste pipes can not be bent in the same way as with copper pipe. You will need to plan your work carefully to ensure you have all the fittings needed for the job without buying surplus.

Cutting plastic waste pipe.
These types of pipes can be cut using a junior hacksaw. It is important, for good work, to cut them square. The easiest method for accomplishing this is to mark the position of the cut and wrap a straight edged piece of paper around the pipe to act as a guide. (Chingford Plumbers provide a comprehensive service). Lining up the edge of the paper with itself as it is wrapped around the pipe, you can be sure the cut will be straight. Simply pencil mark or cut alongside the paper. As with all pipework, it is important to provide support. This is particularly relevant with plastic waste pipes as they have a tendency to sag over time. Simple plastic brackets can be fitted regularly. Waste pipes should always run in a downward direction to the drain. Failure to do so will result in waste water pooling in the pipe, and draining away slowly from the appliance.