Caleffi HIU
Caleffi HIU Expansion Vessel SATKF2016
Expansion vessel SATKF2016 for Caleffi HIU products, used to absorb pressure changes within the heating circuit.
At a glance
- Also known as 4260165
£863.16
£719.30 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 SATKF2016 is an expansion vessel manufactured for Caleffi HIU products. It absorbs the pressure changes that occur as the water in a sealed heating system heats and cools, protecting the circuit from excessive pressure swings. It is a service component for the Caleffi HIU appliance family.
Signs this part needs replacing
- System pressure rises sharply once the appliance is running and heating the circuit.
- Pressure drops repeatedly and the system needs frequent topping up.
- Water or moisture appears at the vessel's air valve when it is depressed.
- The pressure relief valve discharges during normal operation.
- The vessel feels heavy or full of water when checked, indicating a failed internal diaphragm.
Before you order
- Confirm your appliance model against the manufacturer's parts list to verify SATKF2016 is the correct vessel.
- Check the part number on the existing vessel or in the appliance documentation before ordering.
- Have the system pressure and vessel charge checked by a competent heating engineer before replacement.
- Allow for depressurising, draining and recharging the system as part of the replacement.
Compliance
| Alternative numbers | 4260165 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| CALEFFI HIU PRODUCTS | — | — | — |
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.
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