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Johnson & Starley Gas Control Thermostat Valve Natural Gas S00858

Johnson & Starley

Johnson & Starley Gas Control Thermostat Valve Natural Gas S00858

Johnson & Starley natural gas control, thermostat and valve assembly, part S00858, for use on natural gas installations.

At a glance

  • Also known as 1691488
  • Installation and any subsequent commissioning must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
S00858
Showing prices

£501.12

£417.60 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 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

A combined gas control, thermostat and valve assembly manufactured by Johnson & Starley, supplied under part number S00858. It brings the gas control function, temperature sensing and valve operation together in one unit for natural gas installations. The assembly governs gas supply in response to the temperature demand placed on it.

Before you order

  • Check the part number on the existing valve or its documentation against S00858 before ordering.
  • Confirm the installation is on a natural gas supply, as this part is specified for natural gas.
  • Installation and any subsequent commissioning must be carried out by a Gas Safe registered engineer.
  • Refer to the appliance manufacturer's literature for the correct procedure before removing or fitting the assembly.

Not sure which part?

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