APCO

Overview-
Rubber Flapper Check Valves are a low cost high cycle, easy to replace internal parts check valve. They have a basic design with a body, bonnet cover, rubber encapsulated steel flapper.

Actuation-
Rubber Flapper check valves can have set spring sets to close the flapper faster or come with a externally adjustable spring to tune the valve for the “right” closure speed. They can also have external indication or bottom buffers cylinders to slow the closure to minimize water hammer effects. Also, the rubber flapper checks can have a hold open device to open the flapper to help get back flow to help if the check gets clogged, stuck, or just to check operation.

Applications-
Rubber flapper check valves have few moving parts and can be used in water and waste water applications.