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The Hynds Hydro-Brake® Flow Control is a
self-activating vortex flow control device that provides superior hydraulic
performance over conventional flow regulators.
The unique head/discharge characteristics of the Hydro-Brake® can reduce
on-site storage volume requirements by up to 30%, offering significant savings
to the overall project costs.
This self-activating device uses vortex principles to control and attenuate
stormwater flow without the need for moving parts or external power
requirements.
With clear openings up to 600% larger than conventional flow control devices,
the risk of blocking is reduced to an absolute minimum.
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Flow control for stormwater detention
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Aeration of stormwater storage discharges
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Catch basin inlet flow control
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Capture and control of floatable trash
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Erosion control and energy dissipation
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Flow control for Sewer and Combined Sewer Overflow systems
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Three series of Hydro-Brake® Vortex Valves are
available to suit various applications and design constraints.
Refer to the Hydro-Brake® Design Chart for typical sizing guidelines.
Note: the Hydro-Brake® Vortex Valves can be manufactured to any specified
diameter. The diameters listed in the sizing chart are typical guidelines only.
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The Hynds Hydro-Brake® Vortex Valve out performs
conventional flow control devices. It’s unique S-shaped head/discharge curve,
which has been devised from extensive systematic modelling and field testing,
comprises two distinct phases. As the head increases, a transition takes place
from free flow (lower portion of the curve) to vortex controlled flow (upper
portion of the curve).
The Hydro-Brake® Vortex Valve thereby achieves maximum design discharge rates
at lower heads than conventional controls. As a result, storage requirements
are reduced by up to 30%, significantly reducing project costs.
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Hydro Brake Brochure.pdf [635KB] |
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Ideal for retrofitting to existing septic tanks
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Reduces on-site storage volume requirements by up to 30%
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Area of opening is 3 - 6 times larger than the equivalent orifice
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Self-activating with no moving parts or power requirements
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Virtually maintenance free
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Performance proven with over 15000 installations worldwide
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Flow enters the volute tangentially through the inlet. Under low flow
conditions, the Hydro-Brake® acts as a large orifice and water passes directly
from the inlet to the outlet as shown in Figure A.
As flow increases and reaches the flush flow point, high peripheral velocities
start a throttling action. As head increases, the valve approaches the
kick-back point and an air-filled core starts to form in the volute. As head
continues to increase, the air core fully stabilises and the valve discharge is
throttled to that of a smaller orifice, as shown in Figure B.
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