Heavy Fabricated Gates

As name refers, Miter gates are made up of two gate leaves that provide closure at a “miter” or angle pointed towards the upstream side of water flow. The miter gates are normally used to shut off flow at a navigational lock or in a waterway for maintenance of downstream equipment or to protect against flooding. These gates are standard in navigation locks because they provide a completely unobstructed flow path when open. Their simple construction offers long service life and low maintenance. Miter gates are designed for flow or pressure in only one direction.

Miter gates can be manufactured in carbon steel, stainless steel, and duplex stainless steel depending on the corrosiveness of the media and desired length of service life. Miter gates have resilient seals of neoprene and EPDM. Smaller gates can be operated manually with a bevel or worm gear drive and larger gates by hydraulic actuators.

Swing gates are flat gates pivoted at one end allowing rotation through 90 degrees / 180 degrees and are made up of skin plate supported by vertical and horizontal ribs. These gates used to protect against flooding or to dewater sections of a waterway for maintenance. They may be referred to as road closure gates because they most often seal a road cut in a levee. This type of gate, like miter gates, is designed for pressure in only one direction. Its simple construction and operation provide long service life with low maintenance.

Swing gates can be manufactured in carbon steel, stainless steel, and duplex stainless steel depending on the corrosiveness of the media and desired length of service life. Swing gates have resilient seals of neoprene or EPDM.

Smaller gates can be maneuvered by a few people manually and in rare cases, a manual worm gears are used to rotate the gates. Electric Motor operation and Cylinder actuation are both possible to operation these gates.

The tilting weir gate is having a flat skin plate reinforced with vertical and horizontal members fitted with a single torque tube across the invert. These gates are normally used to control the water level on irrigation canals, reservoirs, and drainage canals. These gates, which are sometimes very large, are designed for long life and low maintenance in difficult conditions, but also incorporate several “designed-in,” installation, and field-adjustment features.

As name refers, gate leaf of the tilting weir gate is tilted towards downstream side of reservoir or canals which facilitates to operate gate with minimal opening force. 

Tilting weir gates can be manufactured in carbon steel, stainless steel, and duplex stainless steel depending on the corrosiveness of the media and desired length of service life. They have resilient sealing arrangement.

Bonneted gates are normally used for regulating flow in dam outlet works and remove silt through flushing tunnel. It is a completely enclosed slide gate that is designed and manufactured to be embedded (except for the actuator) in concrete. These gates are used for high water head application and extreme abrasive environment.

A Bonneted Gate consists of a vertically sliding disc, bonnet body, bonnet, bonnet cover, upstream and downstream transition sections, one or more conduit Liner sections, and an actuator. Bonneted gates are often supplied with paired gates and both upstream and downstream transition sections. This entire assembly is often embedded in the primary concrete pour deep in the dam. While this provides unsurpassed structural support, it makes gate replacement impossible. From a practical perspective, only the slide can be serviced without extraordinary efforts.

These gates are offered in various materials of construction such as Stainless steel / Super Duplex stainless steel / Structural steel etc. to suit the intended application. These gates can be operated with electric and hydraulic operating systems.