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Worcester Bosch Pipe DW Shut-Off Valve to Flow Switch 87186841390

Worcester Bosch

Worcester Bosch Pipe DW Shut-Off Valve to Flow Switch 87186841390

Domestic water pipe section running from the shut-off valve to the flow switch on Worcester Greenstar Heatslave II ErP appliances.

At a glance

  • Also known as 2246613
Manufacturer part no.
87186841390
Showing prices

£44.41

£37.01 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

This is the domestic water pipe section that runs from the shut-off valve to the flow switch, manufactured by Worcester Bosch. It forms part of the domestic hot water circuit on the Greenstar Heatslave II ErP range of oil-fired condensing boilers. The pipe carries the domestic water path between the shut-off valve and the flow switch assembly.

Signs this part needs replacing

  • Water weeping or tracking along the pipe at the shut-off valve or flow switch connection
  • Corrosion, pitting or green/white scale staining on the pipe surface or at the fittings
  • Reduced or interrupted domestic hot water draw-off caused by a restricted pipe bore
  • Flow switch failing to trigger, with the boiler not responding to a hot water demand
  • Visible deformation or cracking of the pipe section after frost damage or excessive tightening

Before you order

  • Confirm the appliance model against the fit list, including whether it is a standard or EXT variant
  • Check the pipe routing on the appliance and identify the run between the shut-off valve and the flow switch
  • Inspect the mating fittings and washers at both ends, as these are separate items and may also need attention
  • Have the manufacturer part number 87186841390 to hand when ordering

Not sure which part?

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