overshot gate factory

WATERMAN TILTING WEIR (OVERSHOT) GATESare an overflow-type gate used to control levels in canals, basins and other agricultural, municipal and industrial applications.

The basic gate design uses a rectangular panel mild steel panel that is mounted to a piano hinge at the forward bottom edge of the gate leaf.    This leaf is raised and lowered using a cable drum hoist to control the upstream water level.

Mueller refers to one or more of Mueller Water Products, Inc., a Delaware corporation ("MWP"), and its subsidiaries. MWP and each of subsidiaries are legally separate and independent entities when providing products and services. MWP does not provide products or services to third parties. MWP and each of its subsidiaries are liable only for their own acts and omissions and not those of each other. Mueller brands include Mueller®, Echologics®, Hydro Gate®, Hydro-Guard®, HYMAX®, i2O®, Jones®, Krausz®, Mi.Net®, Milliken®, Pratt®, Pratt Industrial®, Sentryx™, Singer®, and U.S. Pipe Valve & Hydrant. Please see muellerwp.com/brands to learn more.

Overshot gates (also known as pivoting weir gates) are used to control upstream water levels. Versatility, efficiency, and safety are the primary reasons the Fresno Overshot Gate is the method of choice for municipal, agricultural, and industrial canal water control.

Waterman Tilting Weir (Overshot) Gates are an overflow-type gate used to control levels in canals, basins and other agricultural, municipal and industrial applications.

The basic gate design uses a rectangular panel mild steel panel that is mounted to a piano hinge at the forward bottom edge of the gate leaf.    This leaf is raised and lowered using a cable drum hoist to control the upstream water level.

Waterman Canal Gates offer reliable water control on canal and pipeline systems and are built-to-last and designed for years of reliable service, offering a typical field life exceeding 40 years.Learn More

Waterman Roller Gates are designed to control flow and reduce operating loads for high head applications, large loads, or where frequent operation is required. Stainless steel, permanently-lubricated wheels are mounted on each side of the gate. The wheels operate on rails mounted to each side of the opening.Learn More

Waterman Tilting Weir (Overshot) Gates are an overflow-type gate used to control levels in canals, basins and other agricultural, municipal and industrial applications.Learn More

Waterman Self Regulating Tide Control Gates are ideal for tidal wetlands preservation and restoration. The gates restore tidal flushing of marshes without flooding of upland property behind dikes and levees.Learn More

Waterman C-8 Slide Ditch Gates are the most advanced, easiest operating, tightest sealing gate of its type and price in the field of water control. Most commonly used on ditch turnouts and similar low head operations, this ruggedly designed, press-formed, all steel gate holds in any position for easy flow regulation, seals positively, slides easily, and does not load with sand or silt.Learn More

An overflow style adjustable weir that consists of a rectangular steel panel, hinged across the bottom, which is raised and lowered by two cables attached to the upper corners of the gate leaf. Basically, liken it to a drawbridge placed in a canal.

CableDrive is Rubicon’s actuation system designed to provide precision gate position accuracy and repeatability in harsh environments. The drive is a wire rope (cable) and drum mechanism that provides positive drive in both the raise and lower directions. It is designed for high duty cycle operation and provides precise gate positioning to within ±0.5mm (±0.02in).

The drive is managed by Rubicon’s SolarDrive technology – a purpose-built integrated circuit board that manages gate positioning, solar power regulation, battery charge and the pedestal user interface.

During the first 6 years, all the business I did was based in the United States. I did gates in California; Central Florida; Idaho; Port Arthur, Texas; and Utah. There’s one gate that we do, and that nobody else really got into, called the overshot gate.

Frank Stang: We just completed the largest single project that I’ve ever done in my 35 years in the business at Bassano Dam, which is one of the biggest reservoirs in southern Alberta for the storage of irrigation water. It is about 21⁄2 hours from our plant. We built 10 epoxy-coated gates, each 35 feet wide and 14 feet high, complete with electric cable-driven hoist systems, stainless-steel embedments, 10 emergency stop logs, and the lifting device. We just completed the installation of all these components. The owner, Eastern Irrigation District, commissioned them in April of this year. The total investment cost was in the $50 million range.

Trevor Hazell: The front skin plate was 3/8 plate—that’s probably the most significant measurement for a radial gate. There are also some really large I-beams that reinforce the back side of the gate, which is 18 inches deep. It involved a massive amount of steel.

Trevor Hazell: The radial gate itself was actually built in one piece. Two arms are bolted onto that, and those two arms are bolted onto the trunnion beams that are attached to the wall. Instream completed everything from the fabrication of the components to their installation, commissioning, and testing. I was on site as the supervisor for the installation of all 10 gates. From start to finish, each gate took 10 days, including all the bottom sills and side-rubbing plates that were embedded in the concrete structure, all the secondary concrete, and the lifting in of the gates, hoists, and hoist decks. It took us about 100 days in total.

Frank Stang: These gates are a part of the emergency spillway for the dam. About 5 years ago, there was a lot of rain and a lot of flooding. They just about lost this dam because they couldn’t spill enough water through the ordinary gates, of which there are about 25. After this emergency, Eastern Irrigation District, which is one of the biggest irrigation districts in this area, along with the Alberta-based irrigation consultant MPE Engineering, decided that it needed to incorporate another structure. The district built this emergency spillway for that reason.

Kris Polly: I understand that you’ve done a lot of work on similar gates for the U.S. Bureau of Reclamation and the Army Corps of Engineers in the United States. Is that correct?

AWMA’s LayFlat is an overshot gate design with over 20 years proven operation, a certified flow algorithm, is custom designed to meet all specifications and manufactured to the highest international standards.

LayFlat Gates are available in marine grade aluminium, suitable for fresh water applications, and stainless steel for extended design life and/or aggressive service applications.

AWMA were engaged to design, manufacture and supply two (2) LayFlat Gates to replace existing, ageing infrastructure which had reached the end of their service life.

The new gates were specifically designed to fit into the existing structure, deliver superior seal performance and reduce the need for regular ongoing maintenance.

Client supervision of the gate"s, Factory Acceptance Testing procedure allowed stakeholders and operators first-hand experience with the manufacturing process, installation requirements and operational capacity of the gates prior to on-site commissioning.

• All procedures are in accordance with AWMA’s accredited ISO 9001 Quality Management System to ensure each gate is manufactured to a high standard, tested and ready for trouble free operation post approved installation.

Auke Water’s parent company Fuda Group have serviced the water industry in China for 20 years constructing large dam gates in their Jiangsu factory. To expand their product line Fuda created Auke Water, a company who would be dedicated to providing intelligent irrigation solutions within China and East Asia. Auke realised that it did not have the technical experience to produce high quality irrigation solutions, although it had sufficient manufacturing experience to produce quality gates.

After licensing the initial gates designs from a well-known international irrigation gate manufacturer ICS worked with the Auke engineers to produce a range ofhigh qualityaluminium gates that are capable of serving all the typical irrigation canal operations. The range of gates includes overshot regulators capable of accurate in channel flow measurement, undershot regulators and metered farm offtakes.

ICS worked with the electrical engineers to develop standard control systems that are installed on the gates to facilitate the automatic operation, telemetry, local user interface, and power supply. The control systems use all commercially available off the shelf hardware and software which is important to ensure the clients can support and maintain their system economically.

ICS worked with Auke to develop two methods of internet connectivity for their automated gate systems. Two systems were developed so Aukeisable to provide their clients with commercial competitive IoT communication systems for both small projects (e.g less than 40 sites) and large projects. Having every site remotely connected to the internet provides Auke and their clients with a massive advantage when it comes to commissioning, supportandmaintenance. Any updates or troubleshooting that the sites require after installation are easily completed by Aukes engineers without the need to travel tosite, which significantly reduces the maintenance cost and reduces downtime.

ICS’s experience with designing and manufacturinghigh qualityaluminium and stainless steel water gates allowed Auke Water to fast track their in-house design and manufacturing capabilities. ICS trained the engineers and factory personnel on the details of quality water gate design including design principals, material selection and manufacturing procedures.

ICS produced a comprehensive training manual and conducted a series of training sessions with Auke’s salesmen and engineers to train the staff on the fundamental and advanced aspects of canal modernisation. The sessions covered a range of topics from canal evaluation, gate selection, control system development and customisation, canal control algorithm specification and commissioning, SCADA development and cloud computing fundamentals. The comprehensive training sessions enabled the Auke staff to better understand theirclient"sneeds and to effectively turn those needs intohigh qualityproject solutions.

One major way to classify watermills is by wheel orientation (vertical or horizontal), one powered by a vertical waterwheel through a gear mechanism, and the other equipped with a horizontal waterwheel without such a mechanism. The former type can be further divided, depending on where the water hits the wheel paddles, into undershot, overshot, breastshot and pitchback (backshot or reverse shot) waterwheel mills. Another way to classify water mills is by an essential trait about their location: tide mills use the movement of the tide; ship mills are water mills onboard (and constituting) a ship.

There are two basic types of watermills, one powered by a vertical-waterwheel via a gear mechanism, and the other equipped with a horizontal-waterwheel without such a mechanism. The former type can be further divided, depending on where the water hits the wheel paddles, into undershot, overshot, breastshot and reverse shot waterwheel mills.

The Greeks invented the two main components of watermills, the waterwheel and toothed gearing, and used, along with the Romans, undershot, overshot and breastshot waterwheel mills.

Typically, water is diverted from a river or impoundment or mill pond to a turbine or water wheel, along a channel or pipe (variously known as a flume, head race, mill race, leat, leet,penstock). The force of the water"s movement drives the blades of a wheel or turbine, which in turn rotates an axle that drives the mill"s other machinery. Water leaving the wheel or turbine is drained through a tail race, but this channel may also be the head race of yet another wheel, turbine or mill. The passage of water is controlled by sluice gates that allow maintenance and some measure of flood control; large mill complexes may have dozens of sluices controlling complicated interconnected races that feed multiple buildings and industrial processes.

Most watermills in Britain and the United States of America had a vertical waterwheel, one of four kinds: undershot, breast-shot, overshot and pitchback wheels. This vertical produced rotary motion around a horizontal axis, which could be used (with cams) to lift hammers in a forge, fulling stocks in a fulling mill and so on.

However, in corn mills rotation about a vertical axis was required to drive its stones. The horizontal rotation was converted into the vertical rotation by means of gearing, which also enabled the runner stones to turn faster than the waterwheel. The usual arrangement in British and American corn mills has been for the waterwheel to turn a horizontal shaft on which is also mounted a large pit wheel. This meshes with the wallower, mounted on a vertical shaft, which turns the (larger) great spur wheel (mounted on the same shaft). This large face wheel, set with pegs, in turn, turned a smaller wheel (such as a lantern gear) known as a stone nut, which was attached to the shaft that drove the runner stone. The number of runner stones that could be turned depended directly upon the supply of water available. As waterwheel technology improved mills became more efficient, and by the 19th century, it was common for the great spur wheel to drive several stone nuts, so that a single water wheel could drive as many as four stones.sluice gate and thus the flow of the water past the main wheel allowed the miller to compensate for seasonal variations in the water supply. Finer speed adjustment was made during the milling process by tentering, that is, adjusting the gap between the stones according to the water flow, the type of grain being milled, and the grade of flour required.

An inherent problem in the overshot mill is that it reverses the rotation of the wheel. If a miller wishes to convert a breastshot mill to an overshot wheel all the machinery in the mill has to be rebuilt to take account of the change in rotation. An alternative solution was the pitchback or backshot wheel. A launder was placed at the end of the flume on the headrace, this turned the direction of the water without much loss of energy, and the direction of rotation was maintained. Daniels Mill near Bewdley, Worcestershire is an example of a flour mill that originally used a breastshot wheel, but was converted to use a pitchback wheel. Today it operates as a breastshot mill.

Larger water wheels (usually overshot steel wheels) transmit the power from a toothed annular ring that is mounted near the outer edge of the wheel. This drives the machinery using a spur gear mounted on a shaft rather than taking power from the central axle. However, the basic mode of operation remains the same; gravity drives machinery through the motion of flowing water.

A different type of watermill is the tide mill. This mill might be of any kind, undershot, overshot or horizontal but it does not employ a river for its power source. Instead a mole or causeway is built across the mouth of a small bay. At low tide, gates in the mole are opened allowing the bay to fill with the incoming tide. At high tide the gates are closed, trapping the water inside. At a certain point a sluice gate in the mole can be opened allowing the draining water to drive a mill wheel or wheels. This is particularly effective in places where the tidal differential is very great, such as the Bay of Fundy in Canada where the tides can rise fifty feet, or the now derelict village of Tide Mills, East Sussex.Eling, Hampshire and at Woodbridge, Suffolk.