Pressure Controls | McMaster-Carr

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System of Measurement

Inlet Pipe Size

For Use With

Pipe Size

Inlet Thread Type

Thread Type

UN/UNF (SAE Straight)

Maximum Pressure

1,000 psi to 1,999 psi

2,000 psi to 2,999 psi

3,000 psi to 9,999 psi

10,000 psi or greater

Outlet Pipe Size

Material

Fitting Connection

Gauge Included

Maximum Temperature

Body Material

Outlet Pressure

Gender

Maximum Inlet Pressure

Less than 500 psi

500 psi to 999 psi

1,000 psi to 1,999 psi

2,000 psi to 3,999 psi

Outlet Thread Type

Maximum Pressure Regulation

RoHS

Compliant

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Inlet Connection

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Inlet Gender

Set Pressure

3,360 Products

Fluid Handling

Pressure-Regulating Valves

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

304 products

Pressure Switches

Activate controls, set off alarms, and power equipment when a set pressure is reached

310 products

Pressure-Relief Valves

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

245 products

Pressure and Vacuum Switches

Activate controls, set off alarms, and power equipment when a set pressure or vacuum is reached

6 products

Airlocks

Vent gases out of flasks, carboys, and other containers without letting dust and oxygen in

1 product

Breather Vents

Maintain even pressure and vacuum as temperatures change by allowing airflow in tanks and enclosures

155 products

Hydraulic Accumulators

Maintain pump flow, stabilize pressure, and absorb shock during pump failure

25 products

Vacuum Switches

Activate controls, set off alarms, and power equipment when a set vacuum is reached

26 products

Vacuum-Regulating Valves

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

14 products

Differential Pressure Switches

Activate controls and alarms when the pressure difference between process lines exceeds a setpoint

53 products

Pressure Transmitters

Send pressure readings to controllers and remote displays

365 products

Pressure and Vacuum Transmitters

Convert pressure and vacuum measurements into a signal sent to remote displays and controllers

98 products

Differential Pressure Transmitters

Relay pressure changes in heating, cooling, and pumping systems to controllers and remote displays

70 products

Vacuum Transmitters

Transfer vacuum measurements to remote displays and controllers

17 products

Manual On-Off Valves

Start and stop flow through a line

8 products

Air-Exhaust Valves

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

47 products

Flow Transmitters

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

2 products

Power Transmission

Compressed Air Regulators

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

490 products

Compressed Air Filter/Regulators

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

262 products

Safety Lockout Valves

Prevent accidental start-up when servicing equipment

57 products

Compressed Air Pressure Boosters

Ensure tools receive sufficient air pressure by compressing the supply

9 products

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

108 products

Compressed Air Filter/Regulator Manifolds

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

13 products

Compressed Air Flow Boosters

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

14 products

Compressed Air Filter/Regulator/Lubricators

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

254 products

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

28 products

Compressed Air Regulator Locks

Lock over your regulator knob to prevent unwanted pressure changes

6 products

Electrical Power, Networking, and Controlling

Air-Actuated Switches

Press with your hand or foot to turn circuits on and off with air pressure

13 products

Air-Actuated Relays

Convert an air signal on a pneumatic control system to an electric one

1 product

Facility and Grounds Maintenance

Water Hammer Arresters

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

22 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

Heating, Ventilation, and Air Conditioning

HVAC Switches

Control and monitor airflow in HVAC systems automatically

3 products