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Ideal central heating pressure relief valve 173203

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Ideal central heating pressure relief valve 173203

Ideal central heating pressure relief valve (173203) for Excel C, Excel HE and Istor HE boilers, releasing excess system pressure.

At a glance

  • Also known as 2081388
  • Have the work carried out by a Gas Safe registered engineer
Manufacturer part no.
TP-122-1015
Showing prices

£102.24

£85.20 ex. VAT · VAT at 20%

Available to order · 1 working day
Available to order · 1 working day
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

A central heating pressure relief valve made by Ideal for its Excel and Istor HE ranges. It releases water when system pressure becomes excessive, preventing a dangerous build-up.

Signs this part needs replacing

  • Water dripping or spraying from the external discharge pipe
  • Boiler losing pressure repeatedly with no visible leak
  • Valve weeps or won't reseat after opening
  • Corrosion or limescale visible on the valve body

Before you order

  • Match the part number printed on your existing valve before ordering
  • Isolate the boiler and depressurise the system before fitting
  • Have the work carried out by a Gas Safe registered engineer

Not sure which part?

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