Charging Hose | McMaster-Carr

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309 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.

Air Conditioning Hose

Use hose to charge and test your air conditioning units.

Air Conditioning Hose Sets

Each hose is a different color so you can differentiate your lines.

Refrigerant Hose

Made of nylon, this hose keeps refrigerant in but moisture out, protecting your air conditioning or refrigeration system from freezing or corroding.

Refrigerant Hose Fittings

No need for expensive crimping tools—these fittings make air conditioning and refrigeration assemblies with clamps.

High-Pressure Nipples for Compressed Gas

Commonly used in high-pressure welding applications, these nipples connect your tank to the inlet of a pressure regulator. One side has a threaded pipe end and the other side has a rounded end that sits inside a threaded nut to make a threaded connection.

Tubing and Tube Fittings

45° Flared Fittings for Copper and Brass Tubing

No sleeve is required to assemble these fittings, which makes for a faster, more convenient installation compared to 37° flared fittings. They are also known as refrigeration and SAE fittings.

Supported 45° Flared Fittings
for Copper and Brass Tubing

The flared end of the fitting nests inside the fitting body, providing extra support to the tubing. Fittings are also known as inverted 45° flared fittings.

Cleaned and Capped Copper Tubing

This tubing comes cleaned and capped to prevent moisture and dirt from contaminating the inside. It is also known as refrigeration and air conditioning tubing.

Insulated Copper Tubing

Often used in heating and cooling systems, this tubing insulates refrigerant to efficiently transfer heat between components.

Precision Steel Tubing

With the lowest OD tolerance of all our steel tubing, this tubing is designed for precision applications.

Charging and Gauging Kits for Hydraulic Accumulators

Charging and Gauging Kits
for Hydraulic Accumulators

These kits include the hose, gauge, and fittings needed to charge an accumulator.

How to Identify and Measure Fittings

Hose and Hose Fittings

Air Conditioning Hose

Air Conditioning Hose Sets

Refrigerant Hose

Refrigerant Hose Fittings

High-Pressure Nipples for Compressed Gas

Tubing and Tube Fittings

45° Flared Fittings for Copper and Brass Tubing

Supported 45° Flared Fittingsfor Copper and Brass Tubing

Cleaned and Capped Copper Tubing

Insulated Copper Tubing

Precision Steel Tubing

Charging and Gauging Kits for Hydraulic Accumulators

Charging and Gauging Kitsfor Hydraulic Accumulators

Supported 45° Flared Fittings
for Copper and Brass Tubing

Charging and Gauging Kits
for Hydraulic Accumulators