Airgas Ni 20 Industrial Nitrogen Size 20 Hp Steel Cga 580

Product Description

The AIRGAS ni 20 is an industrial-grade nitrogen gas cylinder filled with pure nitrogen (N2), a colorless, odorless, and nonflammable inert gas. Supplied in a Size 20 high-pressure steel cylinder rated to DOT specification 3AA-2015 (Canada 3AA-M154), it delivers dry nitrogen suitable for purging, pressure testing, and leak checking HVAC and refrigeration systems. The cylinder features a CGA 580 valve connection, the standard fitting for nonflammable gas service. HVAC technicians and refrigeration service pros use nitrogen cylinders like this one to pressurize and purge refrigerant circuits during installation and repair work.

This cylinder is suited for residential and light commercial HVAC service, plumbing pressure testing, welding purge applications, and general industrial use where a portable, manageable nitrogen supply is needed. The Size 20 form factor is compact enough for a service vehicle while providing an adequate volume for typical field purge and pressure-test tasks. The high-pressure steel construction ensures the cylinder meets federal and Canadian transport regulations for compressed gas.

Key Features

• Industrial-grade nitrogen (N2) — colorless, odorless, and nonflammable
• High-pressure steel cylinder rated to DOT 3AA-2015 and Canada 3AA-M154
• CGA 580 valve outlet — standard connection for nonflammable compressed gas
• Size 20 cylinder — compact form factor suited for field service use
• Inert gas properties make it safe for purging refrigerant circuits and pressure testing

Compatibility

Designed for use with CGA 580-compatible regulators and fittings standard to nonflammable compressed gas service. Cross-reference designations include Airco/BOC cylinder code R and Air Products cylinder code D.

Installation Notes

Nitrogen cylinders must be handled and stored by personnel familiar with compressed gas safety procedures. Always secure the cylinder upright to prevent tipping, and attach an appropriate CGA 580 regulator before use. When purging or pressure-testing refrigerant circuits, ensure the system is isolated and all refrigerant has been properly recovered before introducing nitrogen. Never use nitrogen to charge a refrigerant circuit or exceed system rated test pressures.

Technical Specifications

• Cylinder Size: Size 20 High Pressure Steel
• DOT Specification: 3AA-2015 / Canada 3AA-M154
• Valve Connection: CGA 580
• Outside Diameter: 5.23 inches
• Length: 14 inches
• Weight: 10.5 pounds
• Gas Type: Nitrogen (N2)
• Physical State: Compressed gas
• Airco/BOC Cross Reference: R
• Air Products Cross Reference: D

Standard Information

• Brand: AIRGAS
• Manufacturer Part Number: ni 20