Before replacing a salon shampoo sink, compare the exact unit’s installed dimensions, support, water connections, drainage, service access and backflow requirements with the existing arrangement. Check whether the new layout changes accessibility or approvals. A bowl that fits the furniture may still need different plumbing; preserve cleaning access and the ability to keep the unit in good repair.
What should be measured and documented?
Record the existing installation and obtain the exact replacement drawings:
| Item | What to compare |
|---|---|
| Installed footprint | Bowl, base, chair movement and usable work area |
| Support | The selected unit's mounting and structural requirements |
| Water connections | Location, connection requirements, controls and sprayer arrangement |
| Drainage | Outlet position, approved trap arrangement and available route |
| Service access | Ability to reach stops, drainage and removable components |
| Surrounding layout | Circulation, access and any affected accessible elements |
These are selection checks, not instructions to adapt a drain with whatever flexible parts fit. Have the installer evaluate the actual unit and local requirements before a concealed connection is made.
What should happen to hair control and backflow protection?
Identify the existing parts and whether they remain compatible and accessible. Jay R. Smith's Figure 8750 is a manufacturer example of a hair and sediment interceptor used at sinks in beauty salons, with a removable basket for cleaning. It is not proof that this model is required or suitable under every shampoo unit.
Salon hair-interceptor requirements explain the separate city approval question. A slow shampoo-sink drain addresses an existing fault; replacing the bowl does not necessarily clear a blocked branch downstream.
Check the sprayer and water protection under the actual installation requirements. Backflow for a new tenant or change of use helps frame the city review without treating all replacements as the same project.
What belongs in the quote and handover?
Ask who includes removal, altered connections, necessary support, opening and restoring finishes, and any applicable permit coordination. Arizona's ROC recommends a detailed written scope. Send the selected drawings with the equipment specification package.
If the replacement changes required clearances or controls, review fixture replacement and accessibility. Save installed model information and instructions with the closeout records, then give staff the correct cleaning and removable-basket instructions for the equipment actually installed.