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MODEL RB Weir Gates
1
OBXC 09-2010
GENERAL DESCRIPTION
The Orbinox model RB Weir Gate is designed for downward
opening applications where a more accurate flow control is re-
quired. The water flows over the top of the slide permitting a con-
stant upstream water elevation. The RB model weir gate is avail-
able from sizes 6”x6” (150mm x 150mm) up to
80”x80” (1200mm x 1200mm).
The sealing system is incorporated on 3 sides (both laterals and
bottom), resulting in a substantially watertight seal without the
need of wedges on the gate. This unique design achieves bidirec-
tional performance (seating and unseating pressure conditions).
Additionally, a 4 side sealing system is available.
The leakage rate on the model RB is lower than the maximum
allowable recommended by AWWA (C513-05) under normal
conditions. Orbinox also designs and manufactures the RB Weir
Gate in larger sizes, for more demanding service conditions and
maintains a leakage rate below the allowable standard from
AWWA. For more information please contact an Orbinox repre-
sentative.
DESIGN CONSTRUCTION
The RB Weir Gates (3 side sealing) is manufactured in general accordance to:
• AWWA C513-05 • DIN 19569 • BS 7775
For the four side sealing system, the gate is manufactured in general accordance to AWWA C561-
04.
The standard RB model is 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, etc.
