Plumbing, Heating & Boiler Parts
Technical review: 2026-08-20
Boiler Diverter Valves & Actuator Motors
Source genuine OEM diverter valve cartridges, hydroblock manifolds, and motorized actuators for domestic combination gas boilers across the UK.
Where to Find Your Model or Part Number
To guarantee 100% compatibility, check these standard locations for model badges, OEM stampings, and serial numbers:
- Gas Council (GC) 7-digit badge on boiler; part number stamped on black actuator motor body (e.g. Bitron, Honeywell, Elbi).
Frequently Replaced Components & Spares
Diverter Valve Internals / Cartridge Kits
Brass and composite valve spindles with high-temperature EPDM sealing O-rings
Synchronous Electric Actuator Motors
230V and 24V stepper motor heads clipping directly onto diverter hydroblocks
Common Symptoms & Fault Diagnostics
| Observed Symptom | Likely Root Cause | Recommended Action |
|---|---|---|
| Hot water only lukewarm unless central heating is running, or radiators get hot in summer when hot tap is opened | Diverter valve cartridge spindle stuck or degraded internal rubber valve seat | Inspect and replace faulty component. |
Compatibility Verification Checklist
Before ordering replacement components, verify these technical specifications to avoid returns:
Quote the 7-digit Gas Council (GC) number (e.g. 47-311-87) to ensure exact hydraulic block revision.
How to Photograph Your Part for AI Identification
- 1Photograph the diverter valve body, actuator motor label, and pipe clips.
Safety & Legal Compliance Notice
All boiler repairs involving room-sealed casing removal must be performed by a registered Gas Safe engineer.