Bristan 00622415 is a screw-in thermostatic cartridge used to control and stabilise mixed water temperature in selected Bristan bar shower valves and mixer shower valves.
The cartridge is used in Bristan Prism, Artisan, Easytherm, Trinity, Java, Qube, 1901, Chill, Solo, Art Deco and JS2 shower mixer valves where the screw-in 00622415 thermostatic cartridge is specified. The plastic version of this cartridge has been replaced by a brass version and the two versions are stated as cross compatible.
| Part code | 00622415 |
|---|---|
| Part type | screw-in thermostatic cartridge |
| Application | Bristan bar shower valves and mixer shower valves |
| Cartridge length | 92mm |
| Diameter | 31.45mm |
| Hex nut diameter flat to flat | 22.9mm to 23mm |
| Material | brass with Vernet 0847 copper thermostat element |
| O-rings | 2 |
| Spline tiers | 1 |
| Gauze filters | 0 |
| Fitting type | threaded screw-in body below the top O-ring |
| Factory temperature setting | 38 C |
| Temperature adjustment | turn the cartridge spindle anti-clockwise for hotter water and clockwise for cooler water |
| Removal tool | 23mm A/F box spanner |
| Service note | isolate both water supplies before removal and apply silicone grease to the visible black seals before refitting |
| Symptom | only hot or cold water from the mixer outlet |
|---|---|
| Likely Cause | hot and cold inlets reversed |
| Solution | check that hot is on the left and cold is on the right when viewed from the front |
| Symptom | outlet temperature too hot or too cold |
| Likely Cause | no hot or cold water reaching the mixer or blocked filters |
| Solution | check water supply and clean insert filters |
| Symptom | fluctuating water or reduced flow |
| Likely Cause | blocked handset, hose, filters or insufficient balanced inlet pressure |
| Solution | check the handset, hose, filters, inlet pressures and hot water temperature |
| Symptom | leaking from controls |
| Likely Cause | cartridge seals damaged |
| Solution | replace seals or cartridge as required |
| Symptom | water leaking from the shower head after shut off |
| Likely Cause | short-term draining can be normal, but ongoing leakage can indicate pressure issues or damaged cartridge seals |
| Solution | check pressures and replace damaged seals if required |
Before ordering, match the code 00622415 and the screw-in cartridge format against the valve currently installed. Do not order from cartridge diameter alone.
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