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Vokera Safety Valve 4250

Vokera

Vokera Safety Valve 4250

Screw-fit safety relief valve for Vokera gas boilers, including Flowmatic, Maxin and Mynute models.

At a glance

  • Also known as 1531122, 4250VOK
Manufacturer part no.
4250
GC number
333-772
Showing prices

£18.00

£15.00 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

The Vokera 4250 is a screw-fit safety relief valve used in Vokera gas boilers. It is a Caleffi 512 type valve that opens to discharge water when system pressure exceeds safe limits, protecting the boiler and connected components. It is a serviceable spare for older Vokera appliance families.

Signs this part needs replacing

  • Water weeping or dripping from the discharge pipe when the system is not over-pressurised
  • System pressure rising above the normal operating range
  • Valve failing to reseat after discharging
  • Scale or debris preventing the valve from sealing
  • Boiler losing pressure or discharging water repeatedly

Before you order

  • Check your boiler model against the fitment list above
  • Confirm the valve connection is screw fit
  • For Vokera Excell 96E, check the serial number is up to N5/052641
  • Have the GC number to hand where shown

Not sure which part?

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