Series 41 Video Overview

AVK Series 41 Swing Check Valve short video features: Easy to replace disk and maintenance, completely opens to provide a clear straight through waterway, O-ring bonnet gasket, bronze seat with steel core, 316 stainless steel hinge pin and bronze bushings. O-ring sealed.

Series 41 Key Features

Resilient seat swing check valve to AWWA C508. For drinking water and neutral liquids to max. 160°F. AWWA C508, 250 PSI Rated, 316 Stainless Steel Internals, Bronze Bushings

Series 53 Video Overview

This short video overview of our Series 53 Ball Check Valves features: Random seating of the ball on closing, ensuring long life, laying lengths, simple bolt on cover for easy maintenance, NBR and Polyurethane balls, sinking and floating balls, vertical installations and designed for liquids containing high solids content.

Series 53 Key Features

Ball check valve for water and neutral liquids to max 160°F. 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.

Series 41 Swing Check Valves

Additional Features

  • Meets or exceeds the requirements of AWWA C508
  • Resilient seat is a steel core coated with EDPM
  • Bronze seat is a steel core coated with EDPM with a bronze insert
  • Lever and weights available, either mounting left or right
  • Body and bonnet are high strength ductile-iron
  • Available with tapping boss tapped and plugged
  • Completely opens to provide a clear, straight through waterway
  • Meets the laying lengths of ANSI/ASME B16.10
  • 250 psi working pressure rating

Series 53 Ball Check Valves

Additional Features

  • 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
  • Ball is the only moving part
  • Ball moves completely out of the flow path for low head loss
  • Pressure rated to 150 psi
  • 100% testing - All valves tested to 150 PSI leak test / 225 PSI shell test


Contact us at:

American AVK CO.

2155 Meridian Blvd.,
 Minden, NV 89423

Telephone: (775) 552-1410