Flow Switches | McMaster-Carr

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Flow Switches

Flow Transmitters

HVAC Switches

System of Measurement

Pipe Size

For Use With

Body Material

Set Point

Wetted Parts Material

Calibrated With

Voltage

Fitting Connection

Mounting Location

Maximum Temperature

Fitting Material

Switch Designation

Flow Measurement Type

Differential Pressure

Magnetic Induction

Mass

Paddle

Positive Displacement

Maximum Pressure @ Temperature

Maximum Flow Rate

1,000 gpm to 1,999 gpm

Shape

Gender

Flow Set Point

Maximum Switching Current @ Voltage

Mounting Position

REACH

RoHS

Compliant with Exemptions

Not Compliant

Export Control Classification Number (ECCN)

EAR99

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

DFARS Specialty Metals

Exempt

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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