
Horstmann Controls
Horstmann Zoneplus 28mm 2 port zone valve Z228 XL
Horstmann Zoneplus Z228 XL 28mm two-port motorised zone valve with spring-return actuator, for central heating zone control.
At a glance
- Also known as 4210120
£135.71
£113.09 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Horstmann Z228 XL is a 28mm two-port motorised zone valve from the Zoneplus range. It regulates water flow to a heating zone using a Class F synchronous motor in a removable actuator, and returns to closed by spring when de-energised.
Signs this part needs replacing
- Valve stuck open or closed, so the zone won't heat or won't stop heating
- Motor humming but the valve not moving
- Actuator overheating or a smell of burning
- Manual override lever no longer returns the valve to closed
Before you order
- Isolate the electrical supply before removing the actuator
- Drain down the local pipework before disconnecting the valve body
- Check whether you need the body, the actuator head, or both
- Confirm 28mm pipe size before ordering
Compliance
| Barcode / EAN | 5015914167027 |
|---|---|
| Alternative numbers | 4210120 |
No fitment data held for this part.
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 documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.
