SPECIAL OFFERS
Special Offers Onyx 400L Blue Potable Accumulator Vessel ONYX400LPOT
Onyx 400 litre blue potable accumulator vessel with 1 1/2 inch connection, 2 bar pre-charge and feet.
At a glance
£745.56
£621.30 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 Onyx 400L Blue Potable Accumulator Vessel is a potable water accumulator vessel for use in domestic and commercial water systems. It stores water under pressure to stabilise flow and reduce pump cycling on boosted or pressurised supplies. This 400 litre unit has a 2 bar pre-charge and a 1 1/2 inch connection, and is supplied with feet for floor standing installation.
Signs this part needs replacing
- Pump short cycling that cannot be corrected by resetting the pre-charge
- Water hammer or pulsating flow at outlets served by the vessel
- Water present at the air valve, indicating a failed internal diaphragm
- Pressure dropping rapidly after the pump stops
- Corrosion, weeping or physical damage at the connection or shell
Before you order
- Confirm the vessel volume and connection size match the existing installation
- Check the system design pressure is compatible with a 2 bar pre-charge
- Verify there is sufficient floor space and suitable load-bearing footing for a 400 litre vessel with feet
- Confirm the vessel is intended for potable water duty in your system
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SPECIAL OFFERS Pressure Vessels & Accessories | — | — | — |
Documents & drawings
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No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
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