Main
Main Gland Housing 10/12307
Gland housing with bush for the thermostat throttle assembly in Main Severn 5 and Severn 5 R water heaters.
Showing prices
£184.46
£153.72 ex. VAT · VAT at 20%
Out of stock — order for next delivery
Call 01302 279234 to check availability
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Main gland housing, part 10/12307, is the bush that sits inside the thermostat throttle assembly. It is a service component for Main Severn 5 and Severn 5 R water heaters.
Signs this part needs replacing
- Water weeping or dripping from the gland area of the thermostat throttle assembly
- Scale or corrosion around the gland housing or bush
- Stiff or erratic movement of the thermostat throttle
- Water tracking along the throttle spindle
Before you order
- Confirm the appliance is a Main Severn 5 or Severn 5 R
- Check the existing gland housing and bush against part number 10/12307
- Inspect the thermostat throttle assembly for damage before fitting
Compliance
| GC number | 285-533 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| MAIN SEVERN 5 | 52-476-23 | 52-476-23 | — | — |
| MAIN SEVERN 5 R | 52-476-27 | 52-476-27 | — | — |
| MAIN THAMES | 52-476-40 | 52-476-40 | — | — |
Fitment listings are a guide, not a guarantee. Plant-room assemblies get modified on site more often than not. Send us the GC number off the data badge and a photo of the existing valve and we will confirm before anything is dispatched.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
No technical questions yet for this part.
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