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Saunier Duval pressure relief valve, 10 bar S1047900

Saunier Duval

Saunier Duval pressure relief valve, 10 bar S1047900

A 10 bar pressure relief valve for a range of Saunier Duval ISOFAST, ISOTWIN and THEMACLASSIC/THEMAPLUS boilers.

At a glance

  • Also known as 1417067
  • Have the work carried out by a Gas Safe registered engineer
Manufacturer part no.
S1047900
Showing prices

£36.00

£30.00 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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 S1047900 is a pressure relief valve set to 10 bar, releasing water from the closed system if pressure becomes excessive, to protect the appliance and pipework.

Signs this part needs replacing

  • Valve discharging or weeping without an obvious system fault
  • Valve fails to release water when pressure is genuinely excessive
  • Corrosion, scale or a seized spindle on inspection
  • Discharge pipe shows signs of repeated venting

Before you order

  • Match the part number and pressure rating against your existing valve
  • Isolate and depressurise the system before removal
  • 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.