CO2 Check Valves

NDL is the first manufacturer of CRN-approved check valves for pressures up to 140 bar. Our CO2 check valves can hold five times their maximum working pressure, netting a tremendous safety margin for any valve used in CO2 systems.

Design and Features

  • Size and Connections
    A wide range of sizes and connection types makes our CO2 check valves compatible with main pipe types manufactured from copper iron alloys and stainless steel.
  • Stainless Steel Body
    Built with a durable stainless steel body, these valves are designed to work seamlessly with both stainless steel and copper-alloy connections, ensuring long-lasting performance and corrosion resistance even in demanding environments.
  • Tested for High Quality
    Each valve undergoes rigorous helium testing at the factory to guarantee leak-free operation. This quality assurance process ensures that every valve is capable of providing reliable and efficient service in a range of applications, from refrigeration systems to HVAC solutions.
  • Compact and Efficient Design
    Features a compact, streamlined design that minimizes flow resistance, ensuring optimal performance, energy efficiency, and easy installation.
  • Unparalleled Warranty
    Our two-year warranty proves confidence. Every CO2 check valve is tested and the serial number is stamped. Valves are cleanly packaged in poly bags and boxed to prevent contamination in transit to the job sites.

Certifications and Approvals

  • CE
  • RoHS
  • UL-Listed
  • CRN Approved (Stainless Steel Check Valves)

CO2 Check Valves (Stainless-steel Ends) Pressure Table

CONNECTIONS W (MM)KV (M3/H)CV (GPM)BARPSI
1022.31402030
1222.31402030
163.64.21402030
228.59.81402030
281922.01402030
322933.51402030
423843.91402030

CO2 Check Valves (Copper-alloy Ends) Pressure Table

CONNECTIONS W (IN)KV (M3/H)CV (GPM)BARPSI
0.25″22.31402030
0.375″22.31402030
0.5″22.31402030
0.625″3.64.21402030
0.75″3.64.21402030
0.875″8.59.81402030
1.125″1922.01402030
1.375″2933.51402030
1.625″3843.91402030
Literature
Product GuideDownload
CRN Approval SheetDownload
Manufacturers DeclarationDownload
EU Declaration of ConformityDownload
One-PagerDownload
Stainless Steel Check Valves Information SheetDownload
C194 Copper Check Valves Information SheetDownload
Stainless Steel Check Valves Technical Submittal SheetDownload
C194 Copper Check Valves Technical Submittal SheetDownload