HDL (American AVK Company)
USA HQ – Minden, NV
AVK has acquired the Hillen de Lelie (HDL) line of Ball Check Valves. The HDL ball check valves are used for industrial and municipal back flow protection. The simple and cost effective HDL design is an ideal solution for liquids containing high solids content. The HDL ball check valves and swing check valves are appropriate for water and wastewater applications through 24″.
Our product offering includes:
Series 53: Ball Check Valves
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
Series 41: Swing Check Valve
Meets or exceeds the requirements of AWWA C508
Easily replaceable disc
Easy to maintain
Three types of seating available
- Resilient to Epoxy
- Resilient to Bronze
- Bronze to Bronze
Resilient seat is a steel core coated with EDPM
Bronze seat is a steel core coated with EDPM with a bronze insert
Stainless steel bolting
316 stainless steel hinge pin and bronze bushings – o-ring sealed
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
O-ring bonnet gasket wraps each bolt to prevent corrosion
250 psi working pressure rating