The Engineering Difference, The Power Behind The Press

PressSure™ Technology

At the heart of every RLS press fitting is PressSure™ Technology, our patented innovation that delivers unmatched reliability and strength for HVAC and refrigeration systems. When performance matters, PressSure™ delivers peace of mind with every press.

This innovative system utilizes annealed copper with dual mechanical and static seals for a 360° leak-proof connection. The unique work-hardening process strengthens the copper during pressing, providing enhanced durability and resistance to pressure fluctuations and vibration over time. With a wide range of jaw and fittings sizes, the system offers unmatched flexibility, making it the ideal solution for HVAC/R professionals to press forward with confidence.

Annealed Copper

RLS fittings are heated to over 1,000°F and then slowly cooled–a process called annealing. This softens the copper, improving its ductility during pressing. Annealing also enhances durability, preventing cracks under pressure and helps the material withstand thermal expansion and contraction.

Dual-sealing Technologies

The PressSure™ system features a dual-radial press that forms two uniform mechanical seals, delivering a precise, secure fit while protecting and reinforcing the HNBR O-ring seal. This ensures a consistent 360° seal for reliable leak protection, even under extreme pressure and temperature variations, remaining free from pinch points or deformation common to other systems.

Work-hardening Process

The PressSure™ work-hardening process takes place during the pressing of annealed copper, altering the material’s molecular structure to increase strength and resistance to wear. This forms two 360° mechanical press bands, creating a durable union and shields the HNBR seal from environmental wear. The result is a stronger, longer-lasting fitting that reduces maintenance and supports consistent system performance over time.

Maximum Versatility

The PressSure™ system is engineered for versatility, offering a wide range of fitting sizes and compatible jaw options to meet the demands of any installation from large systems to tight spaces. With sizes ranging from ¼” to 2-⅛”, PressSure™ provides a flexible, efficient solution for diverse jobsite conditions.

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