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Glow-worm Heating Cock S1025600

Glow-worm

Glow-worm Heating Cock S1025600

Heating cock valve S1025600 for Glow-worm GW 35CI gas boilers, used to isolate the heating circuit for servicing.

At a glance

  • Appliance family: GW 35CI
Manufacturer part no.
S1025600
Showing prices

£23.68

£19.73 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 Glow-worm heating cock is a valve fitted to the heating circuit of Glow-worm GW 35CI gas boilers. It isolates and controls water flow through the heating side of the appliance, allowing the circuit to be shut off for servicing or repair. It is supplied under part number S1025600.

Signs this part needs replacing

  • Water weeping or dripping from the valve body or spindle
  • Spindle seized or stiff, so the valve cannot be turned by hand
  • Corrosion or scale build-up around the valve body
  • Restricted flow through the heating circuit
  • Damp staining or water tracking on pipework below the valve

Before you order

  • Confirm the boiler model on the rating plate matches GW 35CI
  • Check the GC number against the appliance data badge
  • Compare the part number on the existing valve with S1025600
  • Check the valve connections and orientation match the failed part

Not sure which part?

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