Inventors:
James A. Besha - Berne NY
International Classification:
E02B 700
Abstract:
A flow control system for selectively restricting or blocking fluid flow in an open channel or culvert. The system includes a normally collapsed inflatable bladder secured in the channel. When collapsed, the bladder and its securing structure presents virtually no obstruction to fluid flow in the channel. The bladder is selectively inflatable by delivering an inflating medium such as a pressurized gas (air) or a liquid thereto, and, when inflated, provides a controlled obstruction to fluid flow in the channel. The system includes means controlling delivery of the inflating medium to the bladder and also provides for selective and positive withdrawal of the inflating medium for deflation of the bladder. The bladder is sized and shaped according to the contour of the channel for maximum efficiency in controlling fluid flow in the open channel.