Ball Check Valves
AVK has acquired the Hillen de Lelie line of Ball Check Valves. The HDL 5087/AVK Series 53 ball check valve is used for industrial and municipal back flow protection. The simple and cost effective design is an ideal solution to liquids containing high solids content. Sizes available from 1 ½ to 24-inches in diameter.


  • FLxFL version is all ductile iron design
  • NPT  versions available in ductile-iron or stainless steel
  • Laying lengths are to ANSI/ASME B16.10 for swing check valves
  • NBR (Nitrile) and Polyurethane balls available
  • Sinking and floating balls available
  • Ball is the only moving part
  • Ball moves completely out of the flow path for low head loss
  • Random seating of the ball on closing, ensuring long life
  • Pressure rated to 150 psi
  • Simple bolt on cover for easy inspection and maintenance
  • 100% testing – All valves tested to 150 PSI leak test / 225 PSI shell test
  •  Ball Chk_ABall Chk_B