AC-31 Aluminum Canal Gates

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Superior Performance in Corrosive Environments

WATERMAN AC-31 ALUMINUM CANAL GATES offer best-in-class performance for corrosion-resistant, rust-proof installations. The superior design is rugged and durable, yet lightweight and easy to install. Fabricated aluminum eliminates electrolysis that occurs when using cast iron gates with aluminum pipe.


  • Tight closure with tapered wedge seating, low friction opening
  • Rugged, replaceable J-bulb seal provides nearly drip-tight performance
  • UHMW Polyethylene guide inserts
  • Stainless steel stem and bronze lift nut


  • F = Flatback for headwall mounting
  • FF = Flange or thimble mount
  • SB = Spigotback for spiral corrugated pipe
  • TYPE 4 = For mounting in plastic pipe utilizing special two part epoxy
  • TYPE 6 = For HDPE pipe

When ordering AC-31, specify your choice of either crank-operated geared lift or handwheel manual lift.