Altecnic
Altecnic Reflex C Heating Vessel 18 Litre HV18I
18 litre Reflex C heating vessel from Altecnic, used to absorb expansion in sealed heating systems.
£271.51
£226.26 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 Altecnic Reflex C Heating Vessel is an 18 litre expansion vessel for sealed heating systems. It provides a pressurised air cushion that absorbs the volume increase of water as the system heats, helping to keep system pressure stable. This unit is part of the Altecnic expansion vessel range.
Signs this part needs replacing
- System pressure rises sharply as the appliance heats up and drops again when it cools
- The pressure relief valve discharges water during normal heating cycles
- Pressure is lost or cannot be maintained despite repeated topping up
- Water is heard or seen escaping from the vessel's air valve when it is depressed
- The vessel feels heavy or waterlogged when compared with its usual weight
Before you order
- Confirm the existing vessel's capacity matches 18 litres
- Check the vessel is a Reflex C unit so the mounting and connections suit the installation
- Verify the system volume and pressure requirements against the vessel capacity before fitting
- Inspect the system for other causes of pressure loss, such as leaks or a failed pressure relief valve
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ALTECNIC Expansion Vessels | — | — | — |
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.