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Johnson & Starley Pressure Switch 1000-0505740

Johnson & Starley

Johnson & Starley Pressure Switch 1000-0505740

Pressure switch for Johnson & Starley gas boilers, supplied under part number 1000-0505740.

At a glance

  • Also known as 1691253
Manufacturer part no.
1000-0505740
Showing prices

£187.62

£156.35 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

The Johnson & Starley 1000-0505740 is a pressure switch used within Johnson & Starley gas boiler appliances. It monitors pressure at its sensing point and signals the appliance control circuit accordingly. The switch is listed in the Johnson & Starley spares range under the Switches category.

Before you order

  • Confirm the part number 1000-0505740 against the data plate or existing switch before ordering.
  • Check the appliance model and, where applicable, the GC number against Johnson & Starley documentation.
  • Inspect the wiring connections and sensing pipework at the switch location, as these are common causes of a pressure-related fault.
  • If the appliance has a related fault code, record it before ordering so the diagnosis can be confirmed.

Not sure which part?

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