Glow-Worm Boilers Heatline Flow Sensor, Boiler Water Flow Switch, Flow Meter Sensor Replacement Part Number: D003200374

Glow-Worm Boilers Heatline Flow Sensor, Boiler Water Flow Switch, Flow Meter Sensor Replacement

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£61.33
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Glow-Worm Boilers Heatline Flow Sensor, Boiler Water Flow Switch, Flow Meter Sensor Replacement Part Number: D003200374
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Glow-Worm Boilers Heatline Flow Sensor, Boiler Water Flow Switch, Flow Meter Sensor Replacement

SKU W-410957
Manufacturer part number
D003200374
EAN
5037985073632
£61.33
inc VAT£51.11 ex VAT
Lead time: 1-5 working days

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Product: Glow-Worm Boilers Heatline Flow Sensor, Boiler Water Flow Switch, Flow Meter Sensor Replacement (Part no. W-410957)

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Description

Product Overview

The Glow-Worm Boilers Heatline D003200374 Flow Sensor is a replacement component designed to detect water flow within a boiler system. It helps the appliance confirm demand for hot water and supports reliable, efficient operation. Ideal for restoring performance when a worn or faulty sensor causes intermittent hot water or heating issues.

Key Features

  • Accurate flow detection – helps your boiler respond correctly to hot water demand for more consistent performance.
  • Replacement boiler part – ideal for swapping a faulty flow sensor to reduce call-backs and repeat faults.
  • Designed for compatibility – specified by manufacturer part number to help ensure the right fit for the correct Heatline application.
  • Supports efficient operation – correct flow sensing can help prevent unnecessary cycling and improve system reliability.

Use Case / Application

This flow sensor is typically installed inside a domestic boiler or associated pipework where the appliance needs to measure water movement. Suitable for heating and plumbing maintenance tasks such as:

  • Diagnosing hot water activation issues in a kitchen or utility room
  • Resolving intermittent hot water in a bathroom (showers and taps)
  • Planned servicing and replacement of worn boiler flow switch components
  • Repairs where a boiler shows flow-related error codes or fails to detect demand

Problem → Solution

Ideal for fixing boilers that fail to sense water flow properly, helping restore dependable hot water and stable heating performance.

Product Specifications

  • Manufacturer – Glow-Worm Boilers
  • Manufacturer Part Number (MPN) – D003200374
  • EAN / Barcode – 5037985073632
  • Product Type – Flow Sensor (Boiler Flow Switch / Flow Meter Sensor)
  • Typical Applications / Use Cases – Domestic boiler servicing and repair, hot water flow detection, heating system maintenance

Why Buy from BHL

Glow-Worm Boilers parts are made to support dependable heating system performance, and the Heatline D003200374 flow sensor is a key replacement when flow detection becomes unreliable. Buy online from BHL for competitive pricing, free* & fast UK delivery and genuine parts where relevant, delivered with care from UK warehouses. BHL are a specialist online merchant trusted by thousands of satisfied customers online since 1998, with thousands of 5 star reviews. Order the D003200374 today for a straightforward repair and peace of mind.

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Reviews

Buying guide: Boiler Spares

Boiler spares are replacement parts for gas, LPG and oil boilers: printed circuit boards, fans, gas valves, pumps, diverter valves, heat exchangers, sensors, pressure gauges, burners, electrodes, seals, casing panels and flue parts. Most are made for one manufacturer, and often for a narrow range of models, so identifying the boiler correctly matters more than anything else.

Identify the boiler first

Find the data badge, usually behind the front panel or under the controls cover. It shows the manufacturer, the model and the GC (Gas Council) number, a seven-digit reference for the exact appliance. Natural gas and LPG versions of the same boiler usually have different GC numbers, and parts can change between production runs, so the GC number and serial number are the safest way to match a part. The boiler's installation and servicing manual lists the parts for each model.

Part numbers and replacements

Search by the manufacturer's part number where you have it. Manufacturers sometimes replace a part with a newer version under a new number; only use a replacement that the manufacturer lists for your model. Some repairs need a kit rather than a single part, for example a part supplied with new seals or fixings.

Safety

By law, work on gas boilers and their gas parts must be carried out by a Gas Safe registered engineer qualified for that type of appliance; ask to see their ID card before work starts. Oil boilers should be worked on by a suitably qualified technician.

For thermostats and programmers, see heating controls.

Shop all Boiler Spares

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