Flow Switches Flow Instruments

A flow switch is a critical safety device designed to monitor the movement of liquids or gases through a pipe. It triggers an electrical signal (such as an alarm or pump shutdown) when the flow rate either exceeds or falls below a specific set point, protecting equipment from dry-running or over-pressure.

The collection features a diverse range of technologies, including heavy-duty paddle switches, thermal dispersion switches for liquids, and non-magnetic switches. These options allow for specialized applications, such as monitoring air flow in ventilation systems or tracking fluid movement in "rusty water" environments.

Paddle-style switches are ideal for general-purpose liquid applications where a mechanical physical movement can be used to detect flow. Thermal switches are better suited for precise low-flow detection or when a "no-moving-parts" design is preferred to reduce maintenance and wear in aggressive media.

Yes, the range includes specialized 3/4” flow switches designed for threaded plastic piping. These are frequently used in chemical processing and water treatment plants where metal components might be subject to corrosion or chemical attack.

The collection includes compact air flow switches designed specifically for fans and filter fan monitoring. These units can provide high/low alarms to notify operators of ventilation failure or filter blockages, ensuring that critical cooling and air exchange systems remain operational.

Calibration ensures that the switch triggers at the exact flow rate required for your safety protocols and operational efficiency. HK Calibrations provides ISO-compliant calibration services to verify that your flow instruments are operating within their specified accuracy tolerances and meet regulatory standards.