We started in 1987 as a mechanical engineering firm, consulting the refrigeration industry in Canada, the U.S., Australia, and New Zealand. Then in 1998, our engineers recognized a need for a more complete ACR fitting as new refrigerants emerged. Our focus began to shift from consulting to production, with the result being an elite ACR copper fitting like no other in the industry. We’ve continued to expand our product selection, currently offering Refrigeration Ball Valves, Filter Driers, Gas Flex Connectors, CO2 Ball Valves/Fittings, and more. Building off the success gained from our HVAC-R products, we have grown our plumbing products to include PAC Fittings, which are ASME approved. Our Plumbing selection includes Copper Press Fittings, Plumbing (WOG) Valves, PEX, PPSU PEX, PVC, Water Hose Connectors, and more. Now at NDL, we manufacture HVAC-R and Plumbing products across 23 categories that outperform the industry standards, so we always have what you need.