AT400 - Miller Smith Quickbraze Twin-Flame Flexible Tip for Versa-Torch

Precision Brazing with the Miller Smith AT400 Quickbraze Tip

The Miller Smith AT400 Quickbraze Twin-Flame Brazing Tip is a premier solution for professional HVAC technicians, plumbers, and manufacturing fabricators who demand efficiency and precision. Designed as part of the renowned Versa-Torch system, this accessory transforms standard brazing operations into high-speed, high-quality production tasks. The AT400 is engineered to tackle the specific challenges of joining medium-to-large diameter copper pipes, specifically ranging from 7/8 inch to 1-5/8 inch O.D., making it an indispensable tool for commercial installation and repair work.

At the core of the AT400's performance is its innovative twin-flame configuration. Unlike single-flame tips that require the operator to manually circle the pipe to ensure even heating, the AT400 projects heat from two opposing sides simultaneously. This dual-action heating wraps the flame around the workpiece, bringing the copper to brazing temperature much faster than conventional methods. This not only saves valuable time on the job site but also ensures better capillary action for the filler metal, resulting in stronger, leak-free joints with less chance of overheating localized areas.

Flexibility is another hallmark of the AT400. The tip features two 5-inch flexible tubes that can be bent and shaped to navigate around obstacles. In the tight confines of an HVAC unit, a crowded mechanical room, or complex industrial piping assemblies, this flexibility allows the operator to position the flames exactly where they are needed without straining or disassembling surrounding components. The tip comes standard with LP2 ends designed for alternative fuels such as Propane, Natural Gas, and Propylene, offering a cleaner burn and cost-effective operation. While optimized for these gases out of the box, the assembly itself is compatible with all fuel gases if the appropriate tip ends are installed, providing versatility for various shop standards.

Durability and ease of use are built into every Miller Smith product. The Quickbraze connection system allows for rapid tip changes without the need for tools, keeping downtime to a minimum. Whether you are brazing refrigeration lines or assembling plumbing manifolds, the AT400 delivers consistent, professional results that stand the test of time.