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Potterton Drain Valve 5142479

Potterton

Potterton Drain Valve 5142479

Drain valve for Potterton Commercial Sirius 2 and Sirius 3 FS boilers.

Manufacturer part no.
5142479
Showing prices

£15.60

£13.00 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 Potterton 5142479 is a drain valve used on Potterton Commercial appliances. It is a boiler component that allows the water side of the appliance to be drained down for servicing, repair or decommissioning. It is supplied as a spare for the commercial boiler range.

Signs this part needs replacing

  • Water weeping or dripping from the valve body or outlet when the system is under pressure.
  • The valve will not seal fully after being closed following a drain down.
  • The spindle is stiff, seized or rounds off when operated.
  • The outlet is blocked with scale or debris and will not pass water.

Before you order

  • Confirm the boiler model from the appliance data plate against the fit list above.
  • Check the existing valve and its part number before ordering to avoid a mismatch.
  • Allow the system to cool and depressurise, and isolate the appliance, before removing the valve.

Not sure which part?

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