AF-41 Aluminum Flap Gates

WATERMAN AF-41 ALUMINUM DRAINAGE (FLAP) GATES offer a corrosion-resistant, rust-proof automatic drainage gate designed for use with aluminum corrugated pipe or HDPE. The aluminum construction prevents electrolysis associated with cast iron gates connecting to aluminum pipes, and the lighter weight reduces installation costs. The J-bulb neoprene adjustable seats provide excellent sealing against return flow.