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Altecnic Discal Automatic Air Separator DN125 Flange PN16 551122

Altecnic

Altecnic Discal Automatic Air Separator DN125 Flange PN16 551122

Altecnic Discal automatic air separator with a DN125 flanged connection rated PN16, supplied with insulation.

Manufacturer part no.
551122
Showing prices

£14,467.26

£12,056.05 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Discal Automatic Air Separator DN125 flange PN16 with insulation is an Altecnic air separation component for heating systems. It removes entrained air from circulating water, helping to keep flow steady and reduce air-related noise and circulation problems. The unit connects via a DN125 flange and carries a PN16 pressure rating, and is supplied with insulation.

Signs this part needs replacing

  • Persistent air noise or gurgling in the system that does not clear after venting
  • Airlocks and cold spots at radiators or emitters despite bleeding
  • Pump cavitation or erratic circulation linked to entrained air
  • Corrosion or sludge build-up in the system associated with ongoing air ingress
  • Weeping, staining or physical damage at the separator body or flange joints

Before you order

  • Confirm the pipework connection is DN125 flanged and matches the existing separator
  • Check the system operating pressure is within the PN16 rating
  • Verify available space and clearance for the insulated body and flange bolts
  • Confirm the system has been checked for the source of air ingress before replacement

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.