As a trusted partner in the HVAC R CO2 refrigeration and hydronic manufacturing industry, NDL Industries delivers solutions that improve efficiency, reliability and sustainability. Our engineers recognized the need for more advanced ACR copper fittings as new refrigerants entered the market in 1998. In response, we began producing high-quality UL-listed ACR copper fittings with the industry's thickest walls, along with a broad range of components engineered for long-term performance. Every product we develop is driven by an understanding of the real-world challenges our customers face, helping systems operate smoothly and efficiently.

Our focus on reliability led us to expand beyond ACR copper fittings to include refrigeration ball valves rated up to 900 PSI, filter driers designed for A2L systems, PAC copper fittings, and sight glasses. We also launched a hydronics product line featuring copper press fittings, plumbing valves, and low-pressure valves designed to simplify installation. Additional offerings include flexible gas connectors, PVC fittings, black malleable fittings, and black steel nipples for HVAC R and hydronic applications.

Our newest products support high-pressure CO2 refrigeration systems, including UL-listed CO2 ball valves, check valves, and copper fittings rated up to 2030 PSI for valves and 1885 PSI for fittings.