Reducers for Nitrogen | McMaster-Carr

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354 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Precision Extreme-Pressure Stainless
Steel Threaded Pipe Fittings

These fittings are made to tighter tolerances than other stainless steel pipe fittings. They are also known as instrumentation fittings.

Thick-Wall Galvanized Iron and Steel
Threaded Pipe Nipples and Pipe

Typically used with medium-pressure galvanized iron and steel threaded pipe fittings. Also known as Schedule 80.

Compact Extreme-Pressure
Steel Threaded Pipe Fittings

These fittings are strong enough to handle extreme pressures, yet small enough to fit into cramped spaces.

Precision Extreme-Pressure
Brass Threaded Pipe Fittings

Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer.

Aluminum Quick-Connect Pipe
Fittings for Compressed Air

Twist these fittings onto aluminum pipe for quick, sealed connections—no threading, soldering, or welding necessary. Use them to build a compressed air system in half the time it would take to build a copper or steel system.

Right-Angle Flow Rectangular Manifolds

Distribute air or fluid to multiple locations from a single supply source with these manifolds. They are also known as headers.

Straight-Flow Rectangular Manifolds

Unlike other manifolds, which have an inlet on either end, these have one inlet on the opposite side from the outlets. This design allows air or fluid to follow a straight path, improving flow through your system. Also known as headers.

Low-Profile Hex Manifolds

When you’re short on vertical space, these manifolds are a good fit—they have outlets on the side instead of on top, so they have a lower profile than rectangular manifolds. Use them to distribute air or fluid to five locations from a single supply source.

Round Manifolds for Hose Lines

Mount these manifolds on the end of a hose line to distribute air, water, or hydraulic fluid to three locations from a single supply source.

Low-Profile Square Manifolds

With outlets on the side instead of on top, these manifolds have a lower profile than rectangular manifolds and fit well in cramped spaces. Use them to distribute air or fluid to three locations from a single supply source.

Tubing and Tube Fittings

Ultra-High-Polish Gasket Fittings
for Stainless Steel Tubing

Polished to at least a 15 Ra finish on the inside, these fittings have an ultra-smooth interior surface that helps prevent contamination. They are also known as ultra-high-purity fittings.

Push-to-Connect Fittings for
Plastic Tubing—High-Purity

Also known as instant fittings, they connect to tubing with a push, and an internal gripping ring and O-ring hold the tubing tight. Use in applications up to 140 psi.

Pressure-Regulating Valves

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

To maintain contaminant-free standards in clean room environments, these valves come cleaned and bagged to Fed. Std. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection.

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

Often used for oxygen service and other high-purity applications, these valves are cleaned and bagged to meet CGA G-4.1 standards to prevent contamination.

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

Withstand inlet pressures up to 3,500 psi.

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

Valves have a brass body.

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

Commonly used for oxygen service and other high-purity applications, these valves come cleaned and bagged to prevent contamination.

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

Maintain contaminant-free standards in clean room environments. These valves come cleaned and bagged to Fed. Spec. Class 100 and ISO Class 5 clean room standards and have a 316 stainless steel body with a smooth finish to resist dust collection.

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

These valves automatically reduce a high inlet pressure from compressed gas tanks to a lower, stable outlet pressure.

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

Reduce contaminants in gases used in research sample systems, emission monitoring systems, chromatography, and other high-purity applications. These valves have a 316 stainless steel and brass body with a smooth finish to reduce dust collection and internal components designed to protect the seal and diaphragm from contamination.

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

Often used for pressure-vessel testing and other high-pressure applications, these valves can handle at least seven times the outlet pressure of standard tank-mount pressure-regulating valves.

Tank-Mount Pressure-Regulating
Valves for Moisture Removal

Designed for nitrogen gas purging in air conditioning, refrigeration, and plumbing systems.

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

Flowmeters let you see the gas flow rate from a distance.

Extended-Life Pressure-Regulating
Valves for Cryogenic Liquids

For a longer service life than standard valves for cryogenic liquids, these have a durable bronze body. They’re for use with liquid argon, liquid carbon dioxide, liquid nitrogen, and liquid oxygen.

Pressure-Regulating Valves for Cryogenic Liquids

Designed for oxygen service and other high-purity applications, these valves can withstand the extreme cold of liquid argon, liquid carbon dioxide, liquid nitrogen, and liquid oxygen.

Tank-Mount Pressure-Regulating
Valves for Cryogenic Cylinders

Choose from valves for liquid argon, liquid nitrogen, liquid carbon dioxide, or liquid oxygen tanks.

Vacuum-Regulating Valves

Vacuum-Regulating Valves for Air and Inert Gas

These valves have a brass body.

High-Accuracy Panel-Mount Vacuum-Regulating
Valves for Air and Inert Gas

For precise control over your vacuum level, these valves have ±0.1% accuracy.