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Flow Switches

41 Products
Piezo Flow Monitor for Pipes & Chutes, Adjustable Sensitivity, No Maintenance

The Series BFM Bulk Flow Monitor ensures reliable flow detection in pipes and chutes. With adjustable sensitivity and no maintenance, it's ideal for various applications.

Industrial Flow Switches - From 2 to 15 Feet/second

The FSW-40A and FSW-50-Series flow switches feature 15 A SPDT switches. Their non-magnetic design makes these switches ideal for applications in which rust is a problem.

Duct Air Flow Switch, 400-1600 FPM, Die-Cast, Stainless Steel Vane

The Duct Air Flow Switch features a durable die-cast body and stainless steel vane, adjustable for air flow from 400-1600 FPM. Ideal for low air flow alarms in ducts.

Flow Switch With Compact Relay Controller

This switch package offers a complete solution for flow or no-flow switching in pipes or ducting up to 12'. The compact relay controller actuates valves, pumps, or blowers.

Liquid Flow Transmitter and Switch with Visual Indication

The FSW-9000-Series is a flow switch monitor that measures the velocity of the flow. The-Series provides two output options: a 4 to 20mA analog output and a PNP/NPN output.

Adjustable Flow Switches for Oils & Gases, 0.5-20 GPM, Piston Design

The Series AFS Adjustable Flow Switches feature piston design for oils, liquids, and gases. Easily set flow rates from 0.5 to 20 GPM for reliable control and protection.

Non-magnetic Industrial Flow Switches - Ideal for Rusty Water

The FSW-30A flow switches are supplied with six orifices to provide 6 overlapping flow ranges from 0.12 to 8.0 GPM for water. Wetted Parts: brass, 316 SS, phosphor bronze.

Thermal Dispersion Flow Transmitter for 1/2-2 in Pipes, 316L SS

The Thermal Dispersion Flow Transmitter features a durable 316L stainless steel design, ideal for measuring flow in pipes from 1/2" to 2". Perfect for chiller and boiler systems.

Vane Flow Switch for 1-6 in Pipes, 150 psig, 212 °F - Chemical & HVAC Use

The Vane Flow Switch is designed for 1-6 inch pipes, ideal for chemical and HVAC applications. It ensures equipment protection with excellent durability and chemical resistance.

Economical Air Flow Switch With High/Lo Alarms

The FST1000-Series measures air velocity and provides two SPST contact closures corresponding to high and low alarm set points. The alarm set points adjust from 0 to 100%

Thermal Dispersion Flow Switches

The FSW-6000/7000-Series are thermal flow switch monitors designed to monitor flow status and also used to detect level of liquids, air and gas with visual indication of flow

Globe Flow Switch for Water/Oil – ± 1% Repeatability – Easy Adjustment

The Globe Flow Switch ensures precise flow detection in water and oil, featuring easy adjustments and durable, non-corrosive materials for reliable performance.

Polypropylene Flow Switches – 3/8" or 1/4" NPT for Water & Cooling Systems

The Series P3 Polypropylene Flow Switches offer versatile inlet options for water and cooling systems. Ideal for pure water equipment and heat exchangers.

In-line Flow Switch with FlexSwitch Technology for Extremely Low Flow Applications

Reliable in-line flow switch with FlexSwitch technology, designed for precise detection in extremely low flow applications.

Flow Switch, LED Indicators, Adjustable Flow Rate, NO/NC Outputs

The Series TDFS2 Thermal Dispersion Flow Switch features adjustable flow rates and LED indicators for easy monitoring. Ideal for boilers, chillers, and liquid transfer systems.

Flow/No Flow Single Sensor Controller With Strobe Alert

For operator alert to low flow conditions an amber lens distributes the high intensity strobe light in a pattern which calls immediate attention to alarm conditions.

Analyzer Flow Switch Monitor

The Analyzer Flow Switch Monitor series offers reliable flow monitoring solutions for various applications, ensuring accurate and efficient system performance.

Single Sensor Controller

The FLCN-110 offers adjustable time delay relays, invert switch, and LED status enunciators all maximize the flexibility of this powerful controller.

Basic Insertion Type Field-configured Flow Switch with FlexSwitch Technology

Basic Insertion Type Flow Switch with FlexSwitch Technology offers easy field configuration for reliable and flexible flow monitoring.

Heavy Duty Thermal Dispersion Flow and Level Switches with FlexSwitch Technology

Heavy Duty Thermal Dispersion Flow and Level Switches with FlexSwitch Technology offer reliable flow and level detection for demanding industrial applications.

Flow Switches

Flow Switches support automation, monitoring, switching, indication, safety, motion, or process control tasks in industrial, HVAC, laboratory, facility, and OEM systems. Products span liquid flow switches, gas flow switches, paddle flow switches, thermal dispersion switches, relay flow switches, and process flow detection devices.

Applications include pump protection, cooling water proof, HVAC flow verification, chemical lines, gas flow alarms, heater protection, and process interlocks. Products represented in the source data include Omega Engineering and Dwyer Instruments.

Applications include:

  • Switch loads, alarms, control circuits, or interlocks
  • Use relays, timers, pushbuttons, safety switches, or alarm devices
  • Support equipment sequencing, operator control, and protection
  • Mount devices in panels, enclosures, or field locations
  • Match contact ratings, coil voltage, and enclosure needs
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