Flow Meter Control | McMaster-Carr

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Flow Measurement Unit

Cubic Centimeters per Minute

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Standard Cubic Feet per Hour

Standard Cubic Feet per Minute

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Export Control Classification Number (ECCN)

2B350

2B999

EAR99

DFARS Specialty Metals

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Minimum Temperature

10,560 Products

Flowmeters

Panel-Mount Flowmeters

Install on instrument panels

151 products

Flowmeters

Check the flow rate of liquids in your system

186 products

Any-Orientation Flowmeters

Measure flow rate regardless of mounting orientation

50 products

High-Temperature and Pressure Flowmeters

Measure liquids that are too hot or pressurized for standard flowmeters

19 products

Easy Read Flowmeters

The large dial is easier to read at a distance than a scale

50 products

Impact-Resistant Panel-Mount Flowmeters

Install on instrument panels where they might be exposed to damaging impact

14 products

High-Temperature Flowmeters

Measure the flow rate of liquids up to 212° F

21 products

High-Temperature Panel-Mount Flowmeters

Install on an panel to measure the rate of liquids as hot as 212° F

18 products

Impact-Resistant Flowmeters

A stainless steel housing protects the glass body from shattering

9 products

High-Temperature Flowmeters with Digital Display

Monitor the flow rate of liquids up to 200° F from an easy-to-read digital display

10 products

Insertion Flowmeters

Drill a hole to install these flowmeters without disassembling the pipeline

6 products

Socket-Connect Flowmeters

Install the unthreaded ends of these flowmeters into a PVC piping system

4 products

Flowmeters for High-Purity Liquids

Made of plastic and rubber to avoid contaminating liquids, such as deionized water

8 products

Clog-Resistant Flowmeters

Won't clog when measuring liquid with particles up to 1/8" in diameter

7 products

Flanged Flowmeters

Install securely in large pipelines

8 products

Flowmeters with Flow Switch

Turn equipment on and off or activate an alarm when liquid reaches a set flow rate

12 products

Portable Noncontact Flowmeters

Clamp onto pipes to spot-check the rate without disassembling your system

4 products

Flowmeters for Gases

Panel-Mount Flowmeters for Gases

Install on an instrument panel to monitor the rate of air and other gases

136 products

Flowmeters for Gases

Measure the rate at which air and other gases move through your pipes

47 products

Panel-Mount Flowmeters for Gases with Conversion Chart

Measure the flow of water and multiple gases without calculations

36 products

Easy-Read Flowmeters for Gases

The large dial is easier to read at a distance than a scale

20 products

Impact-Resistant Panel-Mount Flowmeters for Gases

Install on instrument panels where they might be exposed to damaging impact

19 products

Flowmeters for Oxygen

Specially cleaned and bagged to prevent oxygen line contamination

9 products

Variable-Pressure Flowmeters for Gases

Measure the flow rate in applications where pressure fluctuates

30 products

TIG Torch Gas Flowmeters

Measure the flow of shielding gas at your TIG nozzle

1 product

Flowmeter/Totalizers

Determine the flow rate and total volume of liquid with the same meter

40 products

Socket-Connect Flowmeter/Totalizers with Remote Display

Place the display up to 25 feet away from the sensor

11 products

Flowmeter/Totalizers with Sanitary Quick-Clamp Fittings

Easy to remove for cleaning and maintenance

17 products

Flanged Flowmeter/Totalizers

Install in large, high-flow pipelines to measure flow rate and total volume

4 products

Flowmeter/Totalizers for Oil and Fuel

Measure the rate and volume of oil, gasoline, diesel fuel, and kerosene

23 products

Socket-Connect Flowmeter/Totalizers

Install in a PVC piping system to measure the rate and volume of liquid

18 products

High-Temperature Flowmeter/Totalizers

Measure the rate and total volume of liquids at temperatures up to 200° F

8 products

Flowmeters for Oil

High-Temperature and Pressure Flowmeters for Oil

Measure oil that is too hot or pressurized for standard flowmeters

53 products

Any-Orientation Flowmeters for Oil

Measure flow rate regardless of mounting orientation

12 products

Flow- and Pressure-Testing Flowmeters for Oil

Find worn components or leaks by testing the flow at different pressures

4 products

Totalizers

Measure the total amount of liquid flowing through your system

12 products

High-Temperature Totalizers

Measure the total amount of liquids flowing at a temperature up to 200° F

5 products

Totalizers with Digital Display for Fuel

Check fuel batches and cumulative totals at a glance on the easy-to-read display

2 products

Flanged Totalizers for Drinking Water

Flanged ends form a secure fit on large pipelines

5 products

Totalizers with Digital Display

Check the cumulative volume and batch total on an easy-to read display

3 products

High-Temperature Totalizers with Digital Display

Show a digital display of the total volume for liquids up to 200° F

8 products

Totalizers for Oil

Measure the total amount of light oil

2 products

Remote-Reading Totalizers for Drinking Water

A display shows total flow volume from sensors up to 250 feet away

10 products

Totalizers for Drinking Water

Measure the cumulative amount of drinking water flowing through the system

7 products

Totalizers for Fuel

Track batches and the total amount of gasoline, diesel fuel, and kerosene

2 products

Totalizers for Natural, Propane, and Butane Gas

Measure the total amount of natural gas, propane, and butane

2 products

Totalizers for Grease

Install on grease guns to measure grease dispensing and reduce waste

1 product

Other Products

Air Flow Control Valves

Control the speed of air-powered equipment by adjusting the volume of airflow entering or exiting

293 products

Flow-Adjustment Valves

Gradually open and close to control the volume of air and liquids through a line

804 products

Flow Transmitters

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

84 products

Manual On-Off Valves

Start and stop flow through a line

3,272 products

Compressed Air Flow Boosters

Amplify flow from a compressed air supply to make sure tools and machines receive enough

7 products

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

50 products

Pressure-Regulating Valves

Reduce inlet pressure to a lower outlet pressure to protect sensitive equipment

305 products

Flow Switches

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

177 products

Air-Exhaust Valves

Vent or divert exhaust to speed up the operation of air cylinders, actuators, and other equipment

104 products

Oil-Dispensing Pump Metering Valves

Add to manual and electric pumps to dispense the right amount of oil to different lubrication points

6 products

Check Valves

Permit flow in only one direction by closing when flow stops or reverses

803 products

Oil-Dispensing Pumps

Deliver controlled amounts of oil at specific intervals to keep equipment lubricated

20 products

Flow-Adjustment Valve Manifolds

Control flow to multiple points from one source

9 products

Liquid-Dispensing Metering Valves

Program to dispense a specific amount of liquid every time and shut off when set amount is reached

3 products

Hydraulic Flow-Adjustment Valves

Turn the knob to gradually adjust the flow of hydraulic fluid

2 products

Orifice Valves

Restrict the flow of liquids and gases to precisely control rate and pressure

989 products

Diverting Valves

Redirect flow between ports

268 products

Hydraulic On-Off Valves

Control the flow in high-pressure hydraulic systems

43 products

Air Flow Check Valves

Open to allow air flow in one direction and close when flow stops or reverses

21 products

Water Hammer Arresters

Absorb shock of sudden shutoffs to prevent knocking noises in water pipes

22 products

Float Valve Bodies

Pair with floats and rods to create float valves that meet your needs

2 products

Solenoid On-Off Valves

A solenoid withstands rapid cycling for applications with frequent opening and closing

566 products

Pressure-Relief Valves

Protect equipment by opening at a set pressure and closing when the pressure drops; for repeated use

76 products

Mixing Valves

Blend hot and cold water, steam, or oil to maintain a set outlet temperature and prevent scalding

277 products

Air-Actuated On-Off Valves

Operate on compressed air to start and stop flow faster than motor-driven valves

194 products

Oil Dispensers

Keep machinery lubricated by applying oil

143 products

Motor-Actuated On-Off Valves

An electric motor handles higher flow rates and pressures than solenoid valves

85 products

Drain Valves

Vent air or discharge liquids to remove excess fluid from your system

91 products

Hydraulic Check Valves

Open to allow hydraulic fluid flow in one direction and close when flow stops or reverses

78 products

Safety Lockout Valves

Prevent accidental start-up when servicing equipment

57 products

Valve Actuators

Automatically start and stop flow to your valve

50 products

Grease Dispensers

Connect to a grease gun, drum, or pail to deliver a controlled, constant flow of grease

84 products

Garden Hose Valves

Start and stop the flow of water through your garden hose

29 products

Water Supply Stop Valves

Shut off water to faucets, toilets, and fountains

23 products

Directional Control Valves

Manage the flow of fluids to move equipment in air- and hydraulic-powered systems

10 products

Sampling Valves

Drain a small amount of liquid or gas for inspection without disrupting flow

10 products

Faucet Pedals

Start and stop water with your foot or knee to keep your hands free

15 products

Air Pulse Valves

Convert continuous flow into bursts that reduce air consumption in dryers and dust collectors

9 products

Pilot Valves

Control air supply to the actuator in other valves

7 products

Grease-Dispensing Pumps

Automate the flow of grease with air or battery power instead of applying it by hand

5 products

HVAC Switches

Control and monitor airflow in HVAC systems automatically

3 products

Pitchers

A long spout makes it easy to pour in hard-to-reach spaces

3 products

Drum Faucets

Control the flow of liquid from drums, tanks, carboys, and other containers

1 product