Innovation in Every Connection
Better Technology Builds Better Systems
At Rapid Locking System (RLS), we believe better technology builds better systems and better businesses. Since 2015, we’ve led the way in flame-free press fitting solutions for HVAC and refrigeration professionals. From day one, our mission has been to simplify the mechanical connection process without sacrificing performance, safety, or reliability.
The Breakthrough: Patented Press-to-Connect Fittings
The game-changer came with our patented press-to-connect fittings which offer a faster, safer alternative to brazing copper tube. By eliminating the torch and reducing install time by up to 60%, RLS technology allows contractors to increase productivity, lower total install costs, and reduce jobsite risk. No fire hazards. No nitrogen purging. No hot work permits. Just clean, permanent mechanical joints—pressed in seconds.
From ZoomLock® to RLS: Expanding Access
RLS fittings were initially introduced through an exclusive agreement with Parker Hannifin’s Sporlan Division, where they were marketed under the ZoomLock® brand. The response from the field was immediate and enthusiastic; technicians appreciated the time savings, safety improvements, and consistent results. In 2019, RLS began selling directly to wholesalers and distributors under our own name, giving customers direct access to the same trusted fittings with the added benefit of brand-dedicated support and innovation.
Growth and Innovation in St. Louis
As demand grew, so did our operations. In 2022, RLS moved into a new 80,000-square-foot headquarters in St. Louis, Missouri. The space features a training center designed to educate contractors, distributors, and reps through live demos, hands-on press instruction, and technical workshops. With dedicated automation lines, in-house engineering, and expanded warehousing, our headquarters reflects our commitment to innovation, operational excellence, and delivering trusted solutions to the HVAC/R industries.
Trusted Worldwide with Millions of Fittings Installed
Today, RLS press fittings are trusted by professionals around the world, with more than 20 million fittings installed in HVAC and refrigeration systems across North America, Europe, Japan, and beyond. Each fitting is engineered, tested, and manufactured in the USA, and is backed by a 15-year limited warranty, proof of our commitment to long-term reliability.
Built for the Future of HVAC and Refrigeration
As the industry evolves – turning to new refrigerants, tighter timelines, and higher safety expectations – RLS remains focused on helping contractors stay ahead. Whether you’re working on a rooftop unit, walk-in freezer, or large-scale system, RLS fittings are built to help you install faster, safer, and smarter.