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Alpha Pipe 1 Mains Inlet/Flow Switch 1.019921

Alpha

Alpha Pipe 1 Mains Inlet/Flow Switch 1.019921

Mains inlet and flow switch pipe assembly for Alpha District Heating Direct and LOW Pressure appliances.

At a glance

  • Appliance family: Alpha District Heating
  • Also known as PIPE-1-MAINS-INLETFLOW-SWITCH, 1259148
Manufacturer part no.
1.019921
Showing prices

£17.71

£14.76 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 Alpha Pipe 1 mains inlet/flow switch (part 1.019921) is a hydraulic component used on Alpha District Heating appliances. It forms the mains water inlet path and carries the flow switch that signals water movement to the appliance controls. It is listed for the Direct and LOW Pressure variants of the Alpha District Heating range.

Signs this part needs replacing

  • Appliance fails to fire on a hot water or heating demand
  • Intermittent ignition or repeated lockouts linked to flow detection
  • Water leaking from the mains inlet pipe or its connections
  • Flow switch failing to register water movement
  • Fault codes relating to water flow or inlet detection

Before you order

  • Confirm your appliance is an Alpha District Heating Direct or LOW Pressure model
  • Check the part number on the existing component matches 1.019921
  • Compare the pipe and switch assembly against the manufacturer's parts list

Not sure which part?

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