Pressure Reducers | McMaster-Carr

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For Use With

Hydraulic Fluid (Petroleum Based)

Pipe Size

Inlet Thread Type

Outlet Pressure

Outlet Pipe Size

Body Material

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

4,000 psi or greater

Not Rated

Maximum Pressure

Less than 1,000 psi

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

Material

Gauge Included

Thread Type

UN/UNF (SAE Straight)

Outlet Thread Type

Maximum Pressure Regulation

Maximum Temperature

Inlet Connection

Valve Function

Back-Pressure Regulation

Fitting Connection

Set Pressure

Inlet Gender

RoHS

Compliant with Exemptions

Not Compliant

REACH

Compliant

Not Compliant

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

Yes

Export Control Classification Number (ECCN)

2B999

EAR99

DFARS Specialty Metals

Exempt

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2,542 Products

Pressure-Regulating Valves

Vibration-Damping Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

A cast iron body absorbs vibration to reduce wear and noise

13 products

Miniature Ultra-High-Pressure-Regulating Valves for Water, Air, and Inert Gas

Regulate extremely high pressure in tight spots

2 products

Quick-Set Pressure-Regulating Valves for Water

Turn the dial to adjust the outlet pressure without using a gauge

8 products

Heavy Duty Pressure-Regulating Valves for Water and Air

Thicker walls make these tougher than brass pressure-regulating valves

5 products

Pressure-Regulating Valves for Drinking Water

Install in drinking water systems

9 products

Tamper-Resistant Compact Pressure-Regulating Valves for Air and Inert Gas

Prevent changes to your pressure setting

2 products

Low-Pressure-Regulating Valves for Water

Respond to the slightest pressure change to maintain stable outlet pressure

1 product

Pressure-Regulating Valves with Garden Hose Fittings for Water

Regulate pressure in light-duty water systems with garden hose connections

2 products

High-Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Withstand more than six times the pressure of standard valves

1 product

Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Reduce a high, variable inlet pressure to a lower, stable outlet pressure

10 products

Miniature Panel-Mount Pressure-Regulating Valves for Water, Air, and Inert Gas

Our smallest valve reduces pressure in spaces where other valves can't fit

1 product

Corrosion-Resistant Compact Pressure-Regulating Valves for Water

Often used on humidifiers and fountains, they withstand deionized water and corrosive conditions

3 products

Panel-Mount High-Pressure-Regulating Valves for Air and Inert Gas

Withstand inlet pressures up to 3,500 psi

1 product

Long-Life Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

The bronze body lasts longer than standard valves

8 products

Corrosion-Resistant Panel-Mount Ultra-High-Pressure-Regulating Valves for Water, Air, and Inert Gas

Resist corrosion in wet conditions and withstand pressure up to 6,000 psi

1 product

High-Accuracy Pressure-Regulating Valves for Steam

Control steam line pressure with ±1 psi accuracy

12 products

Corrosion-Resistant Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Resist corrosion in wet environments

3 products

Tank-Mount High-Pressure-Regulating Valves for Air and Inert Gas

Withstand at least seven times the pressure of standard tank-mount valves

8 products

Cleaned and Bagged Panel-Mount Pressure-Regulating Valves for Air and Inert Gas

Install on an instrument panel for easy access

7 products

Pressure-Regulating Valves for Steam

A cast iron body absorbs vibration to reduce wear and noise

22 products

Pressure-Regulating Valves with Push-to-Connect Fittings for Food and Beverage

Push-to-connect fittings form a seal around plastic or soft metal tubing

1 product

Long-Life Pressure-Regulating Valves for Steam

The bronze body lasts longer than standard valves

8 products

Tank-Mount Pressure-Regulating Valves for Air and Inert Gas

Reduce a high pressure from compressed gas tanks to a lower outlet pressure

39 products

Compact Pressure-Regulating Valves for Water

A low-profile body fits in systems where space is at a premium

4 products

Panel-Mount Ultra-High-Pressure-Regulating Valves for Air and Inert Gas

Withstand inlet pressures up to 6,000 psi

1 product

Threaded Pressure-Regulating Valves for Food and Beverage

Regulate pressure in food and beverage lines

2 products

Clean Room Panel-Mount Pressure-Regulating Valves for Air and Inert Gas

Install on instrument panels for easy access in in clean room environments

13 products

Plastic Panel-Mount Pressure-Regulating Valves for Water

Mount to your water system with a panel-mount nut below the adjustment knob

2 products

Pressure-Regulating Valves with Compression Fittings for Food and Beverage

Compression fittings create tighter seal than push-to-connect fittings

1 product

High-Temperature Pressure-Regulating Valves for Water, Oil, Air, and Inert Gas

Withstand temperatures up to 550° F

5 products

Cleaned and Bagged Pressure-Regulating Valves for Air and Inert Gas

Regulate pressure for oxygen service and other high-purity applications

3 products

Plastic Panel-Mount Pressure-Regulating Valves for Air

Regulate pressure in air and inert gas systems from your instrument panel

2 products

Pressure-Regulating Valves for Chemicals

The plastic body and fluoroelastomer rubber seal stand up to harsh chemicals

8 products

Tank-Mount Pressure-Regulating Valves for Fuel Gases

Attach to tanks of acetylene, hydrogen, methane, propane, or propylene

13 products

Pressure-Regulating Valves for Cryogenic Liquids

Withstand the extreme cold of argon, nitrogen, and oxygen in liquid form

2 products

Corrosion-Resistant Pressure-Regulating Valves for Steam

Resist corrosion in wet environments

3 products

High-Purity Tank-Mount Pressure-Regulating Valves for Inert Gas

Reduce contaminants in gases used in high-purity applications

16 products

Sanitary Pressure-Regulating Valves

Regulate pressure on food, beverage, and pharmaceutical lines

4 products

Long-Life Pressure-Regulating Valves for Cryogenic Liquids

The bronze body lasts longer than standard valves

3 products

High-Purity Tank-Mount Pressure-Regulating Valves for Fuel Gases

Reduce contaminants in high-purity systems of hydrogen and methane gas

5 products

Tank-Mount Pressure-Regulating Valves for Cryogenic Cylinders

Reduce a high pressure from compressed gas tanks to a lower outlet pressure

3 products

Easy-Read Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Flowmeters let you see the gas flow rate from a distance

13 products

Tank-Mount Pressure-Regulating Valves with Flowmeter for Inert Gas

Measure the gas flow rate and regulate pressure

6 products

Pressure-Regulating Valves for Fuel Gases

Install in gas pipelines to regulate acetylene, hydrogen, or propane

3 products

Adjustable-Range Compressed Air Regulators

Includes four springs to regulate multiple pressure ranges

2 products

Clean Room Pressure-Regulating Valves for Water, Air, and Inert Gas

Maintain contaminant-free standards in clean room environments

2 products

Tank-Mount Pressure-Regulating Valves for Moisture Removal

Purge nitrogen gas in air conditioning, refrigeration, and plumbing systems

1 product

Hydraulic Valves

Pressure-Regulating Inline Hydraulic Valves

Maintain a consistent pressure when input pressure varies

1 product

Pressure-Regulating Block-Mount Hydraulic Valves

Use screws to attach to an NFPA valve-mounting block

2 products

Back-Pressure-Regulating Valves

Back-Pressure-Regulating Valves for Air and Inert Gas

Obstruct flow to maintain sufficient operating pressure in your system

3 products

Back-Pressure-Regulating Valves for Water and Oil

Obstruct flow to maintain sufficient operating pressure in your system

4 products

Sanitary Back-Pressure-Regulating Valves

Install at the end of pipelines on processing and sanitizing equipment

3 products

Long-Life Back-Pressure-Regulating Valves for Water and Oil

The bronze body lasts longer than standard valves

6 products

Panel-Mount Back-Pressure-Regulating Valves for Air and Inert Gas

Install on an instrument panel

2 products

Other Products

Pressure-Relief Valves

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

245 products

Compressed Air Regulators

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

490 products

Compressed Air Regulator Manifolds

Use a single air supply to meet multiple pressure requirements

108 products

Water Hammer Arresters

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

22 products

Pressure Switches

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

310 products

Compressed Air Filter/Regulators

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

262 products

Compressed Air Filter/Regulator/Lubricators

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

254 products

Pressure-Relief Discs

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

39 products

Air-Exhaust Valves

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

47 products

Vacuum-Regulating Valves

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

14 products

Respirator Filter Monitors

Track the quality of incoming air as it travels from your air line to your respirator

6 products

Safety Lockout Valves

Prevent accidental start-up when servicing equipment

57 products

Compressed Air Filter/Regulator/Lubricator Manifolds

Distribute compressed air to multiple locations from a single source

28 products

Compressed Air Filter/Regulator Manifolds

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

13 products

Compressed Air Regulator Locks

Lock over your regulator knob to prevent unwanted pressure changes

6 products