Fontana Matte Black Thermostatic 2 Knob 3 Way Mixing Valve FAQ
Cartridge Protection, Temperature Limiting & Three-Way Flow Commissioning
This matte black concealed shower mixer combines pressure-balanced thermostatic regulation,
dual-handle operation, a ceramic cartridge, and three-way outlet distribution.
How should the adjustable temperature limit stop be calibrated?
Run the valve at normal operating flow, measure the mixed-water outlet with a calibrated thermometer, and adjust the integral limit stop before aligning and securing the temperature-control handle.
How can construction debris be prevented from damaging the ceramic cartridge?
Flush the hot and cold branch lines independently before connecting the valve, inspect the integral stops and inlet passages, and prevent joint compound, scale, or solder residue from entering the cartridge waterways.
How should the three-way diverter be validated before wall closure?
Identify and pressure-test the rainfall, hand-shower, and spout circuits separately, then operate every diverter position to confirm positive indexing without cross-flow, leakage, or restricted discharge.
What should be checked when positioning the matte black trim plate?
Set the concealed brass body from the final wall plane so the faceplate seals evenly and both control knobs rotate freely without rubbing, stem overextension, or interference from tile and waterproofing layers.
