Description
Harris HX-3B Inferno® Air-Acetylene Torch Kit
Harris HX-3B Inferno® air-acetylene torch kit, part number 4400083, is a professional brazing, soldering, and heating system designed for HVAC, refrigeration, plumbing, maintenance, and mechanical applications. Built around Harris's Inferno® quick-connect swirl-combustion technology, the HX-3B provides a hot, consistent, controllable flame for contractors who need portable air-acetylene performance in the field.
The HX-3B combines the Harris HQA-4 quick-connect torch handle with a Model 601 acetylene regulator, 12 ft hose, and two Inferno® heating tips. The included HA-3i and HA-11i tips give the kit a broad working range for smaller service work through larger copper-tube brazing and soldering applications, while additional Inferno® tips can expand system capacity even further.
Product Highlights
- Complete Harris Inferno® air-acetylene torch kit
- Designed for brazing, soldering, and general heating applications
- HQA-4 quick-connect torch handle for fast tip changes
- Inferno® swirl-combustion technology for efficient heat transfer
- Consistent flame designed to wrap around the workpiece
- Includes HA-3i and HA-11i Inferno® tips
- Included tips support soldering up to 4 in. copper tubing
- Included tips support brazing up to 2 in. copper tubing
- Optional Inferno® tips expand system capacity for larger tubing
- Designed for professional HVAC, refrigeration, and plumbing work
- Harris manufacturer part number 4400083
Technical Specifications
Included Tip Capacity
HA-3i Inferno® Tip
- Tip Size: 1/4 in.
- Soft Soldering: up to 1 in. copper tubing
- Brazing: up to 1/2 in. copper tubing
- Well suited for smaller service and repair applications
HA-11i Inferno® Tip
- Tip Size: 7/16 in.
- Soft Soldering: 1-1/4 in. through 4 in. copper tubing
- Brazing: 7/8 in. through 2 in. copper tubing
- Designed for higher-capacity brazing and soldering work
System Expansion Capability
The HX-3B includes the HA-3i and HA-11i tips, which provide up to 4 in. soft-soldering capacity and up to 2 in. brazing capacity. Harris also offers additional quick-connect Inferno® tips for larger applications.
With the appropriate optional Inferno® tip, the Harris air-acetylene system can support soft soldering applications up to 6 in. copper tubing and brazing applications up to 5 in. copper tubing.
Inferno® Swirl-Combustion Technology
Harris Inferno® tips use a specially designed internal insert to create a swirl-combustion flame. The resulting flame is designed to deliver consistent heat around the workpiece rather than concentrating heat at only one point, helping improve heating efficiency during brazing, soldering, and heating work.
Harris manufactures Inferno® tips from heavy-duty 304 stainless steel and tests the tip orifice and flame quality during production to support consistent, repeatable performance.
Common Applications
HVAC & Refrigeration
- Refrigeration line brazing
- HVAC copper tubing installation
- Service and repair work
- Equipment connections
- Replacement and retrofit work
Plumbing & Mechanical
- Copper tube soldering
- Copper tube brazing
- Plumbing installation and repair
- General heating applications
- Mechanical maintenance work
Kit Components
Why Choose the HX-3B Inferno® Kit?
The Harris HX-3B provides a broad working range in one portable air-acetylene kit. Its two included Inferno® tips cover both smaller service work and higher-capacity copper tubing applications, reducing the need to carry multiple complete torch systems.
The quick-connect HQA-4 handle also allows the technician to change compatible Inferno® tips quickly as the required tube diameter and heat demand change. For contractors who routinely move between HVAC, refrigeration, plumbing, and maintenance jobs, the HX-3B provides a versatile platform that can also be expanded with additional Harris Inferno® tips.
Product Resources
Review current Harris manufacturer information before final product selection, tip selection, regulator setup, fuel-cylinder connection, or operation.
Need Help Selecting an Air-Acetylene Torch Kit?
Our GetPipe.com team can help confirm the proper Harris Inferno® tip, acetylene regulator, hose, tubing capacity, brazing alloy, solder, flux, and related HVAC or plumbing supplies for your application.
Frequently Asked Questions
What is the Harris HX-3B Inferno kit used for?
The HX-3B is designed for professional air-acetylene brazing, soldering, and heating applications, particularly HVAC, refrigeration, plumbing, mechanical installation, maintenance, and repair work.
What fuel does the HX-3B use?
The HX-3B is an air-acetylene system and uses acetylene fuel with the included Harris fuel-gas regulator and compatible B-tank connection.
What tips are included with the HX-3B?
Harris lists the HX-3B with two Inferno® quick-connect tips: the HA-3i and HA-11i.
How large of a tube can the included HX-3B tips solder?
The included HA-11i is rated by Harris for soft soldering copper tubing from 1-1/4 in. through 4 in., while the included HA-3i handles smaller applications up to 1 in. tubing.
How large of a tube can the included HX-3B tips braze?
The included HA-11i is rated for brazing copper tubing from 7/8 in. through 2 in. The smaller HA-3i is rated for brazing up to 1/2 in. tubing.
Can the HX-3B handle larger tubing with different tips?
Yes. The HQA-4 quick-connect system accepts additional compatible Harris Inferno® tips. Harris lists optional tip capacities extending to 6 in. soft soldering and 5 in. brazing depending on the selected tip.
What does the Inferno swirl flame do?
The Inferno® tip creates a swirl-combustion flame designed to provide consistent, concentrated heat that wraps around the workpiece for efficient soldering, brazing, and heating.
Does the HX-3B have a quick-connect tip system?
Yes. The included HQA-4 handle uses Harris's quick-connect air-fuel tip system, allowing compatible Inferno® tips to be changed as application requirements change.
What size acetylene cylinder connection does the HX-3B use?
Harris lists the HX-3B with a B-tank acetylene connection and a 601-15-520A fuel-gas regulator.
What is the difference between the HX-3B and HX-6MC?
The HX-3B is configured for a B acetylene tank and includes HA-3i and HA-11i tips. The HX-6MC is configured for an MC tank and uses a different regulator and HA-3i / HA-8i tip combination.
Important Operating & Safety Notes
- Use only with compatible acetylene cylinders, regulators, hoses, and connections specified by Harris.
- Inspect the regulator, hose, torch handle, quick-connect fitting, tips, and cylinder connection before operation.
- Select the correct Inferno® tip for the tubing diameter and application.
- Verify regulator pressure and setup using current Harris operating instructions.
- Keep combustible materials away from the work area and maintain appropriate fire protection.
- Use appropriate eye, hand, and protective equipment during soldering, brazing, and heating operations.
- Use proper ventilation and follow applicable hot-work procedures.
- Never use oil or grease on oxygen or fuel-gas equipment connections.
- Never leave connected or operating fuel-gas equipment unattended.
- Review current Harris safety instructions and acetylene-cylinder requirements before use.
