InSinkErator Improper Plumbing Alignment / Installation Issue

Disposal is misaligned with existing plumbing after replacement; cannot connect discharge without strain

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

New disposal is taller or shorter than old unit, Discharge outlet height changed, Rigid piping not adjusted, Trap arm too short or long

Safety first: Turn off power and support the disposal while adjusting plumbing.

Measure outlet height: Compare the new InSinkErator discharge outlet height to the old unit. Adjust trap and trap arm accordingly.
Use adjustable fittings: Install slip-joint or flexible tailpieces to accommodate small misalignments.
Avoid stress: Do not force the disposal up or sideways to meet rigid piping; this can cause leaks and noise.
Rebuild trap if needed: Replace the P-trap assembly with one that matches the new outlet position.

Medium 3/5

P-Trap Assembly

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