Flow Switches / Indicators

Able Instruments are the UK manufacturer of Nestec flow switches and indicators, offering a comprehensive range of compact, rugged flow detection solutions for liquids and gases.

This category includes mechanical flow switches and indicators that use reed switch, magnetic piston, and proximity sensor technology. These devices are ideal for flow/no-flow detection, pump protection, chemical dosing, flameproof environments, and submerged installations. Nestec’s designs are trusted for their accuracy, durability and adaptability across challenging industrial applications.

Nestec flow switches and indicators are suited to cooling loops, chillers, dosing systems, oil and fuel lines, and other industrial flow applications. They are easy to install, require minimal maintenance, and provide reliable switching, even under pulsating flow or intermittent conditions.


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Nestec 4000 Series Flow Switch

Reed switch flow switch for cooling, dosing and OEM applications.

  • Brand: Nestec Services

  • P/N: 4000 Series

  • Lead Time: Contact us for info

Nestec 8000 Series Flow Switch

Pressure-tight flow switch for hydraulic and heavy-duty applications.

  • Brand: Nestec Services

  • P/N: 8000 Series

  • Lead Time: Contact us for info

Nestec 21000 Series Flow Switch

High-flow piston switch for 2″ pipelines and large volumes.

  • Brand: Nestec Services

  • P/N: 21000 Series

  • Lead Time: Contact us for info

Nestec 22000 Series Flow Switch

Inline piston flow switch with SPDT output and 1″ connections.

  • Brand: Nestec Services

  • P/N: 22000 Series

  • Lead Time: Contact us for info