Flow Switches | McMaster-Carr

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Maximum Flow Rate

1,000 gpm to 1,999 gpm

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264 Products

Flow Switches

Inline-Mount Flow Switches

Fixed-Set-Point Flow Switches

Factory set to a specific set point so you don't need to adjust them

47 products

Fixed-Set-Point Flow Switches for Drinking Water

Factory set to activate when your drinking water system reaches a fixed level

1 product

Fixed-Set-Point High-Pressure Flow Switches

Factory set to activate at a specific level while monitoring high-pressure lines

20 products

Flow Switches with Sight

Look through the window to monitor a rotor that spins when flow is present

21 products

Fixed-Set-Point Hazardous-Location Flow Switches

Factory set to activate at a specific flow rate and safe to use around flammable gases

10 products

Variable-Pressure Flow Switches

Accurate even in applications where pressure fluctuates regularly

22 products

Flow Switches

Turn equipment on or off when flow rate reaches a set point

6 products

Electronic Flow Switches

Send digital signals to your PLC when they reach a set flow rate

2 products

High-Pressure Flow Switches for Oil

Measure the flow rate of oil at pressures up to 3,600 psi

8 products

Hazardous-Location Flow Switches

UL listed for environments with flammable gases and combustible dust

2 products

High-Pressure Flow Switches for Gas

Measure the flow rate of compressed gases up to 3,600 psi, such as in compressed-air systems

6 products

High-Pressure Flow Switches

Rated for pressures up to 3,600 psi

6 products

Insertion-Mount Flow Switches

Insert into tees or pipe outlets so you don't need to disassemble your pipeline

7 products

Fixed-Set-Point Insertion-Mount Flow Switches

Come set to a specific set point and don’t require you to disassemble your pipeline

3 products

Hazardous-Location Insertion-Mount Flow Switches

UL listed for environments with flammable gases and combustible dust

4 products

Electronic Insertion-Mount Flow Switches

Insert into tees or pipe outlets and send digital signals to your PLC

8 products

Sanitary Electronic Insertion-Mount Flow Switches

Rated IP67 and IP69K to withstand frequent washdowns

4 products

Other Products

Flow Transmitters

Send flow rate measurements to PLCs, data loggers, and remote displays

84 products

HVAC Switches

Control and monitor airflow in HVAC systems automatically

3 products