Series 41 Swing Check Valve

The Series 41 is our swing check valve that meets or exceeds the requirements of AWWA C508. All valves meet the lay-lengths of ANSI/ASME B16.10 and are tested at 2x the rated working pressure of 250 PSI. All valves are epoxy-coated to C550 and certified to NSF 61 and NSF 372, meeting all requirements of the Safe Drinking Water Act.


Most easily maintained swing check valve available

  • Unique bonnet assembly incorporates the swing check mechanism and disc; simply remove the bonnet to clean mechanism of debris or perform any maintenance
  • Disc is a steel core with EPDM coating for long life standing up to disinfectants and can be easily replaced, if damaged
  • O-ring bonnet gasket wraps around each bolt to prevent corrosion
  • All bolting, pins, and bushings are of stainless steel or low-lead bronze

Flexible design and options

  • Levers and weights are available for left, right, or both sides, for quicker closure
  • Three types of seating available, including resilient to epoxy (standard), resilient to bronze, and bronze to bronze
  • Available with multiple bosses, tapped and plugged

High Performance

  • Valve completely opens, providing a clear, straight-through waterway
  • Low head loss performance saves energy and pumping costs
  • Cycle testing of 1,000,000 operations

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Check Valves