1 Valves | McMaster-Carr

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Export Control Classification Number (ECCN)

1,144 Products

Fluid Handling

On-Off Valves

Start and stop flow through a line

365 products

Flow-Adjustment Valves

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

37 products

Diverting Valves

Redirect flow between ports

16 products

Check Valves

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

52 products

Valve Bodies

Attach to actuators to automatically or manually control flow in your line

3 products

Valve Repair Kits

Maintain valves with replacement parts such as seals, plungers, and springs

28 products

Valve Union Fittings

Mating parts join valves to a line for quick connection and removal

5 products

Float Valves

Open or close a pipe connection when liquids in a container reach a set level; also known as ballcocks

21 products

Float Valve Bodies

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

8 products

Air Vent Valves

Eliminate air pockets from fluid lines to maintain consistent flow and prevent surges

7 products

Vacuum Breakers

When pressure drops, vents open to prevent suction from drawing liquid back upstream

6 products

Air Pulse Valves

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

1 product

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

2 products

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

5 products

Sampling Valves

Drain a small amount of fluid for inspection without disrupting flow

1 product

Directional Control Valves

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

1 product

Orifice Valves

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

8 products

Drain Valves

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

6 products

Air-Exhaust Valves

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

3 products

Pressure-Relief Valves

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

37 products

Pressure-Regulating Valves

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

20 products

Pressure-Relief Discs

Rupture at a set pressure or temperature to vent fluid and gas and protect machinery; one-time use

2 products

Vacuum-Regulating Valves

Control the amount of air that a vacuum pump draws from your system to maintain vacuum levels

1 product

Mixing Valves

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

83 products

Gas Mixers

Supply controlled amounts of air and gas to burners

2 products

Injection Valves

Pump liquid into your process line or tank while preventing backflow

2 products

Steam Traps

Extract condensation from lines without losing any steam

22 products

Strainers

Install next to valves and pumps to catch debris in your line

5 products

Mufflers

Reduce noise and filter exhaust fumes

2 products

Manifolds

Distribute air or fluid to multiple places from a single source; also called headers

55 products

Hose and Hose Fittings

Flexible and stronger than tubing; often used to convey liquids and gases under pressure

55 products

Flame Arresters

Absorb heat from a fire in your gas pipeline to stop it from traveling back to the gas source

1 product

Junction Blocks

Organize and separate multiple lines in a pipe system; air and fluid flow through the threaded holes

4 products

Facility and Grounds Maintenance

Toilet Flush Valves

Release water from a plumbing line or toilet tank into the bowl

18 products

Urinal Flush Valves

Release water from a plumbing line into the urinal bowl

5 products

Shower Heads

Direct the spray of water in a shower or shower station

6 products

Garden Hose Faucets

Connect garden hose to lines coming from a building or the ground

5 products

Safety Equipment

Shower Station Valves

Replace valves on your shower station

3 products

Power Transmission

Air Flow Check Valves

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

2 products

Compressed Air Regulators

Ensure continuous, safe operation of air-powered equipment by controlling air pressure

30 products

Compressed Air Filter/Regulators

Simultaneously clean air that's running through a system and control its pressure

12 products

Compressed Air Filter/Regulator/Lubricators

Deliver clean, lubricated air at the desired pressure to a component in your line

21 products

Compressed Air Lubricators

Extend the service life of air-powered equipment by lubricating the air supply

1 product

Containers, Storage, and Furniture

Drum Faucets

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

1 product