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Washing Machine outflow query

Postby Simon1819 » Mon Sep 29, 2008 1:14 pm

I have heard it is possible to plumb in a washing machine outflow pipe without using a trap. Some sort of anti suction device maybe?
Anybody know anything? Many thanks.
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Postby plumbbob » Tue Sep 30, 2008 11:28 pm

The anti syphon device is used when connecting to a an inline system. All appliances, sanitary fittings and drains must be protected from the main sewer by a seal (usually water). If a washing machine was connected directly, gasses and odors from the sewer would vent back into the appliance.
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