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Glow-worm Service Valve DHW 0010040099

Glow-worm

Glow-worm Service Valve DHW 0010040099

Service valve for the domestic hot water circuit on Glow-worm Compact 24C, 24C P, 28C and 28C P boilers.

At a glance

  • Part type: service valve, domestic hot water (DHW) circuit
  • Also known as 8926082
Manufacturer part no.
0010040099
Showing prices

£72.17

£60.14 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 Glow-worm Service Valve DHW is a service valve for the domestic hot water circuit on Glow-worm Compact C range combi boilers. It allows the DHW side of the appliance to be isolated for servicing and repair work. It is supplied under Glow-worm part number 0010040099.

Signs this part needs replacing

  • Water weeping or seeping from the valve body or spindle
  • Dripping from the valve when the hot water tap is running
  • Scale or corrosion visible on the valve body or connections
  • The valve will not isolate the DHW circuit fully when turned
  • Restricted hot water flow if the valve is partially blocked or seized

Before you order

  • Check the boiler data badge to confirm the exact model and variant
  • Confirm the valve is the DHW service valve and not the heating circuit valve
  • Check access to the valve position before starting work
  • Confirm whether the system needs draining or isolating before replacement

Not sure which part?

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