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Alpha Seal Kit 745 Isolating Valves 6.1000745

Alpha

Alpha Seal Kit 745 Isolating Valves 6.1000745

Seal kit 745 for Alpha isolating valves, part 6.1000745, suitable for Alpha 240 and 280 series gas boilers.

At a glance

  • Also known as SEAL-KIT-745-ISOLATING-VALVES-240280, 1250820
Manufacturer part no.
6.1000745
GC number
343-710
Showing prices

£28.55

£23.79 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 Alpha seal kit 745 (part 6.1000745) is a seal kit for the isolating valves fitted to Alpha gas boilers. It is used to reseal the isolating valves on the Alpha 240 and 280 series, restoring a watertight seal at the valve. The kit sits within the Alpha gas boiler spares range under O-rings, washers and gaskets.

Signs this part needs replacing

  • Water weeping or dripping from an isolating valve body or spindle
  • Damp patches, staining or corrosion around the valve
  • Scale or mineral deposits forming at the valve
  • The valve becomes stiff or difficult to turn
  • Drips continue after the valve is closed

Before you order

  • Confirm your boiler model and, where shown, the GC number against the fitment list.
  • Identify the isolating valve on the appliance and check that seal kit reference 745 applies.
  • Check how many valves require resealing before ordering.

Not sure which part?

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