| Waterman’s AF-41 is an aluminum drainage (flap) gate. It is a corrosion-resistant rust-proof automatic drainage gate designed for use with aluminum corrugated pipe, for flange mounting, or for use with HDPE. This gate prevents electrolysis commonly associated with cast iron gates to aluminum pipe connections. J-bulb neoprene adjustable seats provide excellent sealing against return flow. The AF-41 uses double pivot hinge arms for best seating. |  |
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AF-41 Aluminum Drainage Flap Gate
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