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Baxi Hydroblock Flow 720399201

Baxi

Baxi Hydroblock Flow 720399201

Baxi Hydroblock Flow, part 720399201, a hydraulic assembly for Baxi and Broag commercial appliances; alternative number 1132489.

At a glance

  • Part type: Hydroblock flow assembly
  • Appliance family: Broag commercial
  • Also known as 1132489
Manufacturer part no.
720399201
Showing prices

£124.49

£103.74 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 Hydroblock Flow is the hydraulic assembly that manages water movement through the appliance, combining the flow path with the connections that feed the heating circuit and domestic hot water side. This unit is supplied by Baxi under part number 720399201 and is listed against Broag commercial equipment. It sits within the water-carrying section of the boiler, so it is exposed to system pressure, heat and the debris that circulates with the water.

Signs this part needs replacing

  • Water weeping or staining around the hydroblock body or its connections
  • Loss of system pressure that cannot be traced to another component
  • Domestic hot water running cold or fluctuating while the heating side behaves normally
  • Boiler locking out or reporting a flow-related fault during a demand for heat or hot water
  • Scale or debris build-up restricting flow through the block, causing poor performance on both circuits

Before you order

  • Confirm the appliance model and serial number, and check the compatibility list below to be sure this hydroblock matches your unit
  • Note the alternative number 1132489 so the correct item can be cross-checked against any documentation you hold
  • Inspect the joint faces and seals on removal and replace any gasket or O-ring that is disturbed during the swap

Not sure which part?

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