SPECIAL OFFERS
Onyx 25L White Potable Vessel 3/4 2Bar
Onyx 25 litre white potable expansion vessel with a 3/4 inch connection and a 2 bar pressure rating.
At a glance
£30.30
£25.25 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 Onyx 25L white potable vessel is a 25 litre expansion vessel rated at 2 bar with a 3/4 inch connection, intended for potable water systems. It forms part of the Onyx expansion vessel range and absorbs the expansion of water as it heats within a sealed system. The white coating and potable-rated construction suit domestic hot and cold water installations.
Signs this part needs replacing
- Water discharging from the pressure relief valve during heating cycles
- Reduced or fluctuating pressure at the hot water outlets
- Water weeping from the vessel connection or shell
- Discoloured or tainted water drawn from the vessel
- The vessel feels heavy or waterlogged when tapped
Before you order
- Confirm the connection size matches the system pipework at 3/4 inch
- Check the system operating pressure is compatible with the 2 bar rating
- Verify the vessel is suitable for potable water use in the installation
- Confirm 25 litres is the correct capacity for the system volume
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SPECIAL OFFERS Pressure Vessels & Accessories | — | — | — |
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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