Valves for Air | McMaster-Carr

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Hydraulic Fluid (Petroleum Based)

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Sodium Chloride

Sodium Hydroxide (Caustic Soda)

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2B999

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DFARS Specialty Metals

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6,985 Products

Fluid Handling

Manual On/Off Valves

Start and stop flow through a line

1,851 products

Flow-Adjustment Valves

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

420 products

Diverting Valves

Redirect flow between ports

190 products

Air-Actuated On/Off Valves

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

179 products

Check Valves

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

552 products

Solenoid On/Off Valves

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

386 products

Valve Bodies

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

16 products

Motor-Actuated On/Off Valves

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

33 products

Drain Valves

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

13 products

Tap Valves

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

1 product

Orifice Valves

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

963 products

Vacuum Breakers

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

16 products

Backflow-Prevention Valves

Dual checks stop flow from reversing and contaminating your system

5 products

Flow-Adjustment Valve Manifolds

Control flow to multiple points from one source

2 products

Pressure-Relief Valves

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

96 products

Pressure-Regulating Valves

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

83 products

Vacuum-Relief Valves

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

3 products

Vacuum-Regulating Valves

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

14 products

Tube Fittings

Make threaded, push to connect, barbed, and other types of connections between lengths of tube

464 products

Rotary Joints

Transfer air, water, oil, and steam from supply lines to continuously revolving drums and rollers

1 product

Pipe and Fittings

Generally thicker and more rigid than tubing for distributing liquids and gases

11 products

Manifolds

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

713 products

Hose Fittings

Create threaded, barbed, quick-disconnect, and other types of connections between lengths of hose

447 products

Junction Blocks

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

88 products

Mufflers

Reduce noise and filter exhaust fumes

24 products

Lubricating

Coolant Hose and Fittings

Build a custom system to deliver coolant, cutting oil, water, or air in any direction

260 products

Facility and Grounds Maintenance

Air Admittance Valves

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

2 products

Building and Machinery Hardware

T-Slotted Framing Manifolds

Distribute air or liquid from a single supply to multiple areas in a T-slotted framing structure

26 products