Refrigerant Coupling Systems is a U.S. owned corporation in Rocklin, California .RCS, Inc. provides innovative products and responsive support to serve our customers’ needs for modern mechanically attached fittings for heat-free assembly of refrigerant piping systems. The relationship between RCS, our Team Members, and our Customers is the cornerstone upon which our business operates. We’re backed by strong ethical management, sound engineering principles, and solid expertise in the products, services, and solutions we provide. RCS, Inc. is committed to be the best in the industry by working collaboratively with our customers, to create mutual, long-term success.