4" High Flow Flap Valve

Accessories - 39033

4" High Flow Flap Valve

4 inch Hi-Flow Flap Valves allow a rapid flow of rainwater through a down pipe or overflow pipe while being equipped with a flap that cannot be over rotated and left open. Once there is no demand of rainwater, the flap automatically closes to provide further mosquito protection and preventing birds from building a nest in your overflow pipe. Available in 3 inch or a 4 inch model, 4 inch High Flow Flap Valves (also known as a 4 inch Mozzie Stopper) can also be used for installing at the end of your SCH40 Inlet Pipe that dumps into your rainwater tank screen.

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All sales through distribution. Monday through Friday, 8am to 5pm (PST)

                    4" High Flow Flap Valve

Keep mosquitoes, birds, frogs, and other pests out of your pipework while allowing water to flow out unimpeded with this plastic 4" High Flow Flap Valve.  It's ideal to install at the end of your overflow pipe or any charged line to ensure pests can't enter back into the system. The High Flow Flap Valve is also available in a 3" version!


Keep out Pests and Vermin

Keep mosquitoes, birds, squirrels, frogs, and all pests out of the pipework in your system. 


Let the Rainwater Flow

Whenever water is flowing, the Flap Valve automatically opens to let rainwater out. This ensures unimpeded flow even during high rainfall events. This design ensures the flap remains closed when no water is flowing, and it can not over-rotate or get stuck open. 


Vented Design

The vented design allows the system to breathe. It also provides smooth and quiet operation as both air and water enter the system during rain events.  


Ships From: 

Lake City, PA 16423


Part Number:

39033


4" Flap Valves are recommended on the following Rainwater Tank sizes:

1500 Gallon,  2500 Gallon,  3000 Gallon,  5000 Gallon Short,  5000 Gallon Tall   


Buy this product on the following online stores:

Tractor Supply, Grainger, Zoro


4' High Flow Flap Valve | Flap Valve | BushmanUSA.com

All sales through distribution

Monday through Friday, 8am to 5pm (PST)