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Custom Engineered Valves
Hydropower & Dams
AFT represents several manufacturers who work in the Hydropower market as it relates to flow control. From maintaining pond elevations with rubber dams and crest gates, to energy dissipation, we are likely to have a solution that fits. Review some of products below and call us today for more information...
Broome Gates
Steel-Fab Broome Gates, also known as Caterpillar Gates, are roller-mounted vertical lift gates supported along either side by stainless steel roller chains. Otherwise, their construction and function is very similar to that of Roller Gates. Broome gates feature a sloped sealing surface. However, if the sealing surface is vertical, they are sometimes called Coaster or Tractor Gates.
Bulkheads
Bulkhead Gates and Stop Log Panels are mainly used to isolate a waterway structure for maintenance. These gates or panels are installed and removed under balance head conditions with a crane. Commonly, a Bulkhead Gate refers to a single panel gate and Stop Logs are furnished in multiple sections to reduce required lifting forces.
Crest Gates
The Crest Gate is a spillway style gate used for water level control and trash sluicing. It consists of a reinforced leaf with bottom hinges mounted to the waterway floor. The gate is opened and closed by rotating about these hinges. In the lowered position, the gate leaf conforms to the profile of the spillway crest.
Fish Diversion Screens
Fish diversion screens are used in water systems to protect fish from hydroelectric turbines and pumps, and prevent their migration into irrigation channels and canals. Hendrick Screen Company's fish screens comply with National Oceanic and Atmospheric Administration (NOAA) standards. The U.S. Fish and Wildlife Service, Army Corps of Engineers, and many state departments of fish and wildlife deploy Hendrick screens for the protection of fish. Hendricks products are environmentally friendly to fish and other aquatic life.
Fixed Cone Valves
Known for its excellent energy dissipation, the Fixed Cone Valve is a regulating discharge valve for outlet works on medium to high head dams. This valve features a conical head that extends beyond the end of a cylindrical body. Radial ribs support the cone and the opening that is controlled by a sliding gate sleeve. The gate sleeve slides over the valve body and opening to control flowrate and fully close against the cone. As the valve opens the flow is dispersed into the atmosphere in an expanding cone shape that aerates and disperses energy.
Jet Flow Gates
Jet Flow Gates are used as regulating gates to provide controlled discharge on outlet and bypass structures. They are most commonly installed for free discharge in the horizontal direction, but some are set at a downward angle or below tailwater for submerged discharge. The Jet Flow Gate is like a bonneted slide gate in appearance but includes a circular floating seat ring. The seat ring, or seal ring, is a tapered orifice and the primary design feature that contracts flow through the gate body and jet flow gate valve to safely discharge downstream. The contracting flow allows air to be introduced without cavitation or vibration.
Aero-Mod's SEQUOX process offers the benefits of sequencing aeration with the reliability of continuous clarification, resulting in consistently superior effluent quality.
Aero-Mod's SEQUOX process offers the benefits of sequencing aeration with the reliability of continuous clarification, resulting in consistently superior effluent quality.
Inflatable Rubber Dams
Inflatable rubber dams have been used as water control structures for more than fifty years.The world’s first inflatable rubber dam was installed in Los Angeles County in the USA in the mid-1950s. In those days, inflatable rubber dams were viewed much as they are today as relatively inexpensive, versatile structures capable of creating pondage and/or controlling flow in a particular watercourse.
The rubber dam is a permanent structure comprising a sheet of rubber-coated fabric (rubber body) which is fixed to a reinforced concrete foundation using clamp plates and anchor bolts. The rubber dam is inflated by pumping air or water inside the rubber body until the design height or pressure is reached. It is deflated by allowing the air or water inside the rubber body to escape.
The rubber dam is a permanent structure comprising a sheet of rubber-coated fabric (rubber body) which is fixed to a reinforced concrete foundation using clamp plates and anchor bolts. The rubber dam is inflated by pumping air or water inside the rubber body until the design height or pressure is reached. It is deflated by allowing the air or water inside the rubber body to escape.
Roller Gates
Roller gates are vertical lift gates with a series of rollers or wheels located along each side of the leaf. The rollers transfer hydraulic load from the gate to the roller tracks mounted in the guide slots on each side of the gate opening. The wheels minimize frictional forces when raising and lowering the gate reducing the load on the gate operating system. Roller Gates, also referred to as Fixed Wheel Gates, are typically used where opening sizes are too large to efficiently use slide gates or for applications where gravity closure is a requirement.
Slide Gates
Our product offering is vast and can suit applications for a wide variety of industries. Choose from cast iron slide or flap gates, fabricated slide or flap gates, rectangular butterfly gates, stop logs, wall thimbles, lifts and accessories.
Tainter (Radial) Gates
Tainter gates, also referred to as radial gates are primarily used as spillway (flood control) gates due to their simplicity and efficient design. They consist of a curved skinplate reinforced by horizontal or vertical stiffening ribs and supported by radial arms on each side of the gate.
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