American AVK Company

Expect Quality Products

Series 279C:  FlowGuard I Hydrant Check Valve

The AVK FlowGuard I will fit any manufacturers dry barrel fire hydrant with a 6-inch Mechanical Joint at the inlet.

The AVK FlowGuard I prevents reverse flow through a fire hydrant, stopping intentional distribution system contamination or accidental cross connections through a fire hydrant. A clear waterway and free swinging disc ensures the valve does not interfere with fire-fighting operations; The check valve is a low head loss design.


  • Clear waterway design for low headloss
  • Can be installed on any 6” mechanical joint hydrant inlet
  • EPDM disc for long life in chlorine and chloramines
  • Stainless steel bolting to prevent corrosion
  • All internal parts are 316 stainless steel or fusion-bonded epoxy coated for long life
  • Ductile Iron body and bonnet, rated for 250 psi
  • Fusion bonded epoxy coating
  • Restrained joint between the fire hydrant and the check valve
  • Resilient seated for a tight seal. Even at low pressures
  • Exceeds AWWA C508
  • Tested to 1,000,000 cycles
  • 10 year warranty