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Ideal Mixing Valve HIU 178073

Ideal

Ideal Mixing Valve HIU 178073

Ideal HIU mixing valve, part 178073, for Ideal Commercial heat interface units; regulates blended hot water temperature.

At a glance

  • Part type: Mixing valve
  • Appliance family: Ideal Commercial HIU
  • Also known as 1782887
Manufacturer part no.
178073
Showing prices

£551.16

£459.30 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 Ideal HIU mixing valve is a replacement component for Ideal Commercial heat interface units. It blends flow and return water to hold a stable domestic hot water temperature at the outlet. The valve is supplied under part number 178073 and is also listed against alternative number 1782887.

Signs this part needs replacing

  • Domestic hot water temperature swings between hot and lukewarm during draw-off
  • Hot water runs cool even when the primary circuit is up to temperature
  • The valve spindle feels stiff, gritty or fails to move through its full travel
  • Scale or debris build-up inside the valve body causing erratic blending
  • Temperature at the tap drifts away from the set point over time

Before you order

  • Confirm the part number on the existing valve matches 178073 before ordering
  • Check the HIU model and serial number against the compatibility list
  • Inspect the mating faces and seals on removal and renew any gasket or O-ring that shows flattening or hardening

Not sure which part?

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