SPECIAL OFFERS
Special Offers 28Mm Angled Auto Bypass Valve 28ABP
28mm angled automatic bypass valve for boiler installations, maintaining minimum flow as system valves close.
At a glance
£27.80
£23.17 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 28mm Angled Auto Bypass Valve is an automatic bypass valve for heating systems, used to keep a minimum flow rate through the boiler as thermostatic radiator valves and zone valves close down. It forms part of the Special Offers Altecnic Valves & Vents range and is intended for boiler installations. The angled pattern suits pipe runs where the connection turns at the valve.
Signs this part needs replacing
- Boiler short cycling or locking out when heating demand drops
- Whistling or whooshing noise through the bypass as system valves close
- Radiators warming when there is no call for heat
- Persistent flow or pressure faults after bleeding and balancing
- Leaks or corrosion around the valve body
Before you order
- Confirm the pipework at the bypass position is 28mm
- Check that an angled body suits the pipe run and available space
- Verify the bypass is being installed in the position specified by the boiler manufacturer's instructions
No specification data held for this part.
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| SPECIAL OFFERS Altecnic Valves & Vents | — | — | — |
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.