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Home Site Map - Techniques - Plumbing -

Kitchen and Utility Fixtures

Star Special case plumbing needed for kitchens and utility rooms.


Kitchen island sinks

Venting a sink on an island in the kitchen present special challenges because there is no way to route a vent upwards from the island.  The diagram below shows how plumbing code requires it to be done (in most geographical areas).

Island sink venting 

Kitchen island sink pipes


Dishwasher plumbing diagram 

Kitchen sink, food grinder, and dishwasher can discharge through a single 1.5" trap.

Dishwasher waste pipe must increase to 3/4".

Secure dishwasher exit pipe to underside of counter.

Typically connect to side of food grinder but can use Wye between sink and sink trap.

Kitchen Faucet

Kitchen faucet - two outlets 

Purchasing detail is here .

It's nice to have an extra tap and an extra nozzle so you can do separate filtered drinking water or boiling water from an instant hot water heater.


Instant Boiling Water Heater

Boiling Water Heater InSinkerator  Details here .

This will give you close to instant close to boiling water from an extra faucet in the kitchen.

Laundry washing machine

Washing machine plumbing