HVAC-R Products

It all started with the development of our flagship ACR copper fitting line; it was a turning point for NDL and the Industry. Recognizing a lack of sources for high-quality copper refrigeration fittings within the market, NDL embarked upon the design and manufacture of the industry’s best copper refrigeration fitting products. We’ve continued to expand on our design innovation to offer other high-quality products for the HVAC-R marketplace. In addition to the Copper Fittings, we offer brass fittings, refrigeration ball valves, sight glass, filter driers, black malleable iron fittings, and more.
HVAC-R Product Guide