Plumbing, Heating & Boiler Parts
Technical review: 2026-08-20
Thermostatic Shower Mixer Cartridges
Source replacement brass thermostatic cartridges, wax thermostatic elements, and ceramic disc flow valves for concealed and exposed shower valves.
Where to Find Your Model or Part Number
To guarantee 100% compatibility, check these standard locations for model badges, OEM stampings, and serial numbers:
- Stamped on brass cartridge housing (remove handle trim); laser etched on decorative wall escutcheon plate.
Frequently Replaced Components & Spares
Thermostatic Cartridges
Temperature regulation cartridges with integrated wax capsules
1/2" & 3/4" Ceramic Disc Flow Valves
Quarter-turn and half-turn on/off ceramic disc flow control valves
Common Symptoms & Fault Diagnostics
| Observed Symptom | Likely Root Cause | Recommended Action |
|---|---|---|
| Shower runs only boiling hot or freezing cold without blending, or water drips constantly from showerhead | Limescale seizure in thermostatic wax element or cracked ceramic sealing disc | Inspect and replace faulty component. |
Compatibility Verification Checklist
Before ordering replacement components, verify these technical specifications to avoid returns:
Measure overall cartridge length, spline tooth count (e.g. 20, 24, 30 teeth), and collar diameter.
How to Photograph Your Part for AI Identification
- 1Photograph the removed cartridge from side profile and count spline teeth.
Safety & Legal Compliance Notice
Turn off hot and cold mains water supplies before unscrewing shower valve cartridges.