
SPECIAL OFFERS
Onyx Potable Accumulator Vessel ONYX200LPOT
Onyx 200 litre blue potable accumulator vessel with 1 1/2 inch connection, 2 bar rating and feet.
At a glance
£426.82
£355.68 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 200 litre blue potable accumulator vessel is a pressure vessel for potable water systems, holding water under pressure to smooth supply fluctuations and reduce surge in the pipework. It is supplied with a 1 1/2" connection, a 2 bar rating as listed and feet. The vessel sits within the Onyx expansion vessel range.
Signs this part needs replacing
- Pressure surges, water hammer or knocking in the pipework that the vessel no longer absorbs
- Visible corrosion, rust staining or weeping around the base, connection or seams
- Water discharging from the air valve, which points to a failed internal diaphragm
- Loss of pressure at the air valve when checked with a gauge
- The vessel no longer holding its set pressure between checks
Before you order
- Confirm the 200 litre capacity matches the existing vessel and the system demand
- Check the connection size is 1 1/2" to suit the pipework
- Confirm the 2 bar figure suits the system's required setting
- Check there is a level base and enough clearance for the vessel and its feet
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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