The Orbinox model RC and RR Flap Gate Valves are designed for
discharge lines such as levees, sewer lines and drainage
conduits. The flap stays closed preventing water back-flow,
and it opens automatically when the unseating water head
is higher than the seating water head. From sizes 6”x 6” to
56” x 56” the RC square Flap Gate and the RR round Flap
Gate have a unique seal design, resulting in a substantially
watertight performance. Orbinox can also design and
manufacture the RC and RR models in larger sizes. For more
information, please contact an Orbinox representative.​

The standard RR and RC models are manufactured in
stainless steel which has a higher corrosion resistance in
many applications which results in a longer life cycle with
little or no maintenance. Other materials of construction are
available upon request, such as AISI 904L, Duplex stainless,

Flap Gate Valves