Ideal Standard Trevi Therm Volume Handle — A963515AA
The Ideal Standard A963515AA is an authentic replacement volume control handle engineered specifically for the popular Trevi Therm built-in and exposed thermostatic shower mixers. Finished in a premium polished chrome, this "new style" handle operates the on/off and flow rate selection of the shower valve. It serves as a direct swap for worn, loose, or calcium-damaged control levers, instantly returning a smooth, precise operational grip and a refreshed, mirrored appearance to your shower unit.
Identification Guide:
MPN: A963515AA (Alt: A963515) | Range: Trevi Therm Series (Post-2000 / New Style) | Function: Volume / Flow Control | Finish: Chrome (AA)
Key Features
- Original Fit: Guarantees perfect alignment with the spline configuration of Trevi Therm flow control cartridges.
- High-Gloss Finish: Multi-layer chrome plating designed to resist moisture, tarnishing, and corrosion in the enclosure.
- Ergonomic Contour: Features the updated sleek, clean-edged design optimized for easy gripping even with soapy hands.
- Solid Construction: Engineered to original factory criteria to resist internal stripped splines under standard daily force.
Installation Note
This handle is the "New Style" volume control design and is intended for valves manufactured primarily after the year 2000. It covers the flow mechanism (not the temperature control). Before seating the new handle onto the cartridge spline, ensure all debris or old limescale buildup has been safely cleared away to ensure a tight, flush fit.



