Washing machine Waste

10 Feb 2017
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Newport Wales
United Kingdom
In an existing kitchen is the sink unit in 1000mm base unit
There is a 1 1/2 sink in it with the correct trap kit with it.
Sink is located at left hand end of unit
There is a spout to connect a washing machine to the trap kit.

The washing machine can only be installed to the right of the base unit.
A Can I just extend the flexible pipe on the machine to reach the spout or spout to machine in rigid pipe?

B or should I extend 40mm Waste pipe through the base unit and mount a washing machine stand pipe Waste adjacent to the machine?

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You can extend the current machine waste or extend the current waste to the machine. Don't like stand pipe for w/m as they can overflow, prefer to install nozzle on waste.
I refer using the standpipe, especially if far away from the sink trap. They don't create noise in the sink when the washing machine empties, they don't contaminate the sink waste with washing machine dross and gunge and in my experience, as long as the stand pipe is long enough, the run is installed properly in 40mm or 50mm when needed and with the correct fall, they never overwhelm the trap.
Agreed with the standpipe, and another option for noise sensitive areas is to use a washing machine nozzle on a stand alone pipe and an aav.
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