Smith 30 Series Medium Duty Acetylene Regulator, CGA 520 B-Tank Connection

The Professional's Choice for HVAC and Plumbing Brazing

When your work takes you to rooftops, basements, or tight utility closets, you need equipment that is as portable as it is reliable. The Smith 30-15-520 Acetylene Regulator is purpose-built for the mobile tradesperson. Fitted with a CGA 520 connection, this regulator attaches directly to standard 40 cubic foot "B" tanks, commonly used in plumbing, HVAC, and refrigeration repair. It delivers the consistent flow control necessary for high-quality silver brazing, soldering, and light welding applications.

Precision Control in a Compact Package

Despite its compact size suitable for portable tote kits, the Smith 30 Series does not compromise on performance. It features a medium-duty capacity that easily handles the flow requirements for most heating and brazing torch tips used in the field. The neoprene composite diaphragm is extremely sensitive to adjustment, allowing you to dial in the exact flame characteristics you need—whether you are sweating copper pipes or brazing HVAC lines. The large, easy-to-read 2-inch gauges provide clear readings of both tank contents and delivery pressure, so you are never caught off guard by an empty cylinder.

Built to Last in Tough Environments

Field tools take a beating, and the 30-15-520 is constructed to survive the drop and drag of job site use. The polished brass gauges are encased in a rugged housing and protected by shatter-resistant polycarbonate lenses, eliminating the common issue of cracked glass faces. The bonnet is nickel-plated, not just for looks, but to protect the regulator from the corrosive elements often found in damp basements or industrial settings. Furthermore, the internal Sure-Seat™ technology filters out dirt and scale that can come from swapping tanks in dirty environments, ensuring your regulator holds pressure and doesn't "creep" when the torch is off.

Safety and Warranty

Smith Equipment stands behind the quality of this American-made product with a 3-Year Limited Warranty, giving you peace of mind in your investment. The regulator includes an auto-resetting external relief valve, a critical safety feature that vents excess pressure safely away from the diaphragm in the event of a surge. With its combination of safety, durability, and precision, the Smith 30-15-520 is the ideal upgrade for any B-tank torch kit.