ACR Copper Fittings

NDL leads the industry with its flagship ACR Copper Fittings, which exceeds industry standards for working pressure.

  • Copper Quality
    NDL ensures copper quality content and strict adherence to meet or exceed ASME B16.22 standards for wall thickness.
  • Burst Pressure
    Our ACR copper fittings are tested for actual burst pressure and approved by TSSA with a 4.5 times safety margin.
  • Tight Tolerances
    The NDL fittings have tight tolerances on the cup side. It enables a stronger joint with the tube and easier brazing.
  • Easily Identifiable
    NDL stamps the size of each fitting. This greatly benefits the counter sales team ensuring correct identification. It also aids the contractor in the field once the fitting is removed from the box.
  • Clean Packaging
    NDL poly-bags the fittings before packaging them inside the box. The refrigeration system needs to keep the fittings clean; contaminants can cause expensive and destructive malfunctions. This organizational feature also saves time and money when clients count their inventory, they count boxes and not individual fittings.
  • Unparalleled Warranty
    The unparalleled NDL 10-Year Ultimate Protection Warranty will cover the loss of refrigerant and labor to replace the failed fitting. Our copper fittings have had zero reported failures since 1999.

Certifications and Approvals

  • TSSA
  • CRN-Approved
  • ANSI/ASME B16.22
  • UL Certified (SA45869) for sizes up to and including 2-5/8″
Product GuideDownload
ACR Copper Fittings UL Certification Information SheetDownload
Technical Submittal SheetDownload
Difference between HVAC-R and CO2 Refrigeration Fittings - Educational MaterialDownload
Difference between HVAC-R and Plumbing Fittings - Educational MaterialDownload