Replacing a washing machine waste nozzle? Check both ends before you buy

A replacement nozzle has to match two different connections under the sink. One end receives the appliance’s waste hose. The other has to fit the trap or waste fitting already installed. A label such as 1½ inch describes a connection on the fitting and can be mistaken for the hose size.

Take three photos before ordering

Take one wide photo to show how the hose reaches the trap, one close-up of the existing joint, and one of the trap’s model marking. Include a ruler beside the fitting if the space is tight. Leave any installed plumbing in place while taking the photos.

Check which end the size refers to

McAlpine identifies the WMF4 as a 90° nozzle for a 1½-inch Multifit receiving connection. Its size describes that receiving connection. Check the appliance maker’s drain-hose instructions and the existing hose end separately. A threaded branch from another trap range may need a different part.

Allow for the hose to turn

Compare the direction the old nozzle points with the available space behind the cupboard or appliance. A right-angle nozzle can change where the hose runs. If a shelf or back panel would pinch the hose, establish the route before buying. For an installation with a standpipe, check the appliance instructions for that arrangement.

What to put on the materials list

Record the trap make and model, the type of receiving connection, the appliance model, the hose-end detail and the direction you need the nozzle to face. If the trap body is damaged or the connection cannot be identified, ask the installer to confirm whether the nozzle or a larger assembly is needed.

Model reference and selection details. McAlpine WMF4 product page.