Flap valve is a simple but very efficient piece of equipment, it allows water to be discharge from a water treatment or Power plant but do not allows water to enter. But using the flap valve, complicated piping system can be avoided. Characteristic of these flap valves are:

• Material: HDPE  and Stainless steel.
• Circular or Square / rectangular shape
• On, Off & on-off seat arrangement
• Applicable to area with tidal influent
• Seal material include Neoprene, Nitrile, EPDM and special material upon request
• Sliding plate material include HDPE or UHMWPE

Standard follows are according to AWWA, BS EN, DIN, ISO or other upon request