Valves | McMaster-Carr

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Export Control Classification Number (ECCN)

15,902 Products

Fluid Handling

On-Off Valves

Start and stop flow through a line

4,222 products

Flow-Adjustment Valves

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

770 products

Directional Control Valves

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

421 products

Diverting Valves

Redirect flow between ports

266 products

Air Valves

Fill tanks, tires, and other pressurized equipment

23 products

Check Valves

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

749 products

Valve Repair Kits

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

160 products

Valve Bodies

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

16 products

Drain Valves

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

83 products

Valve Union Fittings

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

34 products

Solenoid Coils

Replace the coil that actuates your flow-control valve

54 products

Valve Actuators

Automatically start and stop flow to your valve

47 products

Float Valves

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

119 products

Float Valve Bodies

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

61 products

Float Rods

Connect valve bodies and floats to build or repair a float valve

18 products

Valve Seats

Seal valves when they're closed to prevent leaks

40 products

Valve Handles and Knobs

Replace the handle on most types of valves

41 products

Orifice Valves

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

102 products

Air Vent Valves

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

38 products

Flow-Regulating Valves

Maintain the set flow rate of fluid through your system

50 products

Sampling Valves

Drain a small amount of fluid for inspection without disrupting flow

9 products

Pilot Valves

Control air supply to the actuator in other valves

13 products

Tap Valves

Pierce copper tubing for a secondary line to humidifiers and ice makers; also known as saddle valves

1 product

Vacuum Breakers

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

35 products

Air-Exhaust Valves

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

68 products

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

26 products

Propane Tank Valves

Start and stop the flow of propane from a tank

7 products

Air Pulse Valves

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

7 products

Sump Pump Backflow-Prevention Valves

Block dirty water from returning to your sump pump

2 products

Valve Mounts

Match standard NFPA mounting patterns to connect valves with multiple ports

8 products

Spray Nozzle Bars

Attach nozzles to build your own spray system

15 products

Valve Stem Adapters

Connect valve stems to actuators with an ISO 5211 hole pattern

7 products

Pressure-Relief Valves

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

236 products

Pressure-Regulating Valves

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

289 products

Compressed Gas Valves

Check and adjust the pressure of compressed gas in tanks; also known as Schrader valves

2 products

Pressure-Relief Discs

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

39 products

Vacuum-Regulating Valves

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

14 products

Hydraulic Accumulator Charging and Gauging Kits

Fill accumulators with nitrogen and test the pressure to ensure it’s within the correct range

1 product

Vacuum-Relief Valves

Open at a set vacuum and close when the vacuum level drops to protect equipment

3 products

Air Chucks

Connect air hose to Schrader valves, which are common on tires and hydraulic systems

28 products

Hose and Hose Fittings

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

953 products

Tube and Tube Fittings

Typically more flexible than pipe for carrying liquids and gases in short runs around equipment

569 products

Manifolds

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

637 products

Pipe and Pipe Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases through your facility

21 products

Flame Arresters

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

8 products

Junction Blocks

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

88 products

Mixing Valves

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

277 products

Tank Mixing Nozzles

Circulate liquid in tanks to keep solids from settling

8 products

Gas Mixers

Supply controlled amounts of air and gas to burners

7 products

Injection Valves

Pump liquid into your process line or tank while preventing backflow

7 products

Steam Traps

Extract condensation from lines without losing any steam

100 products

Strainers

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

23 products

Mufflers

Reduce noise and filter exhaust fumes

24 products

Liquid-Level Gauges

Monitor fluid levels in containers

1 product

Facility and Grounds Maintenance

Flush Valve Replacement Parts

Replace virtually any part in the most common flush valve brands

262 products

Sink Faucets

Manual and touch-free faucets for janitorial, restroom, and food service sinks

96 products

Faucet Cartridges

Replace the cartridges in common faucet brands; also known as stems

92 products

Faucet Pedals

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

15 products

Faucet Shut-Off Rods

Nudge the rod to turn water on and release to turn off without touching handles

2 products

Toilet Flush Valves

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

18 products

Toilet Tank Replacement Parts

Replace parts such as flappers, fill valves, and floats in your toilet tank

23 products

Pressurized-Tank Toilet Kits

Replace upper water supply, flush valve cartridge, or the whole system in pressurized-tank toilets

12 products

Shower Valves

Control water and regulate temperature to prevent scalding

1 product

Showers

Hook up to a water supply near a drain for a convenient utility shower

1 product

Shower Heads

Direct the spray of water in a shower or shower station

17 products

Urinal Flush Valves

Release water from a plumbing line into the urinal bowl

19 products

Flush Valve Converters

Make manual flush toilets and urinals touch-free

21 products

Drain Check Valves

Prevent water damage by placing into floor drains to stop sewer back-ups

3 products

Sinks

Freestanding, wall-mount, countertop, and floor sinks

18 products

Air Admittance Valves

Allow air into drain, waste, and vent systems so you don't have to vent plumbing to the outdoors

2 products

Drinking Fountain Nozzles

Dispense water from fountains; also known as bubblers

6 products

Garden Hose Faucets

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

31 products

Soap Dispenser Valves

Replace the valve on your soap dispenser

3 products

Power Transmission

Air Flow Control Valves

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

292 products

Compressed Air Filter Elements

Replace filter elements for peak performance in removing solid particles, water droplets, and oil

30 products

Compressed Air Filters

Purge particles, oil, and other contaminants from air lines to prevent damaging equipment

2 products

Compressed Air Regulators

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

386 products

Compressed Air Filter/Regulators

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

181 products

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

20 products

Compressed Air Filter/Regulator/Lubricators

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

192 products

Compressed Air Filter/Regulator Manifolds

Purify air from a single supply and distribute it to multiple locations

4 products

Compressed Air Lubricators

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

1 product

Hydraulic Check Valves

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

78 products

Air Flow Check Valves

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

21 products

Hydraulic Flow-Adjustment Valves

Turn the knob to gradually adjust the flow of hydraulic fluid

2 products

Air Cylinders

Push and pull loads to do everything from stamping materials to sorting parts on conveyors

12 products

Containers, Storage, and Furniture

Drum Faucets

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

29 products

Lubricating

Coolant Dispenser Hose and Fittings

Snap together and position to deliver coolant, oil, water, or air in any direction

252 products

Coolant Dispenser Hose Tools

Assemble and disassemble coolant hose and fittings

8 products

Grease Fitting Junction Blocks

Send different types and amounts of grease from multiple grease fittings to lubricate several points

9 products

Grease Fitting Manifolds

Lubricate multiple points with the same amount and type of grease using one grease fitting

3 products

Grease-Dispensing Pumps

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

4 products

Oil-Dispensing Pumps

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

16 products

Oil-Dispensing Pump Metering Valves

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

3 products

Oil Dispensers

Keep machinery lubricated by applying oil

129 products

Oil Brushes

Connect to oil dispensers to brush lubricant onto chain, gears, and conveyors

25 products

Oil Dispensing Stations

Connect to a bulk oil container to fill hand-held dispensers

1 product

Safety Equipment

Shower Station Valves

Replace valves on your shower station

3 products

Eye Wash Station Replacement Parts

Replace eye wash station parts such as spray heads, valves, handles, and bowls

12 products

Respirator Valves

Fit onto your respirator to help regulate the pressure inside

11 products

Heating, Ventilation, and Air Conditioning

Air Conditioner Service Valves

Tap into refrigerant lines to drain and fill your system

18 products

Air Conditioner Service Valve Caps

Seal off AC service valves to prevent refrigerant from leaking out

2 products

Electrical

Distribution Posts

Send power from one source to several devices in a circuit in less space than a distribution block

4 products

Distribution Bars

Route electricity within switchboards and battery banks; also known as bus bars

31 products

Terminal Blocks

Create tidy rows of wire connections that you can identify, test, and adjust on the spot

699 products

Distribution Blocks

Distribute electricity from a single power source to several devices in a circuit

47 products

Fastening and Joining

Welding Gas Flashback Arresters

Attach to your gas welder to extinguish flames and stop reverse gas flow

24 products

Shut-Off Valve Wrenches

Turn hard-to-reach valves on gas lines, faucets, toilets, and sinks

4 products

Measuring and Inspecting

Refrigerant Pressure Testing Manifolds

Monitor refrigerant pressure when servicing air conditioning systems

7 products

Material Handling

Valve Stems

Snap into tubeless tire rims to create an air inlet

4 products

Building and Machinery Hardware

T-Slotted Framing and Fittings

The most versatile system, attach fittings along the continuous slots to build virtually anything

26 products