overshot gate price

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) 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.

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

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 are becoming increasingly popular for controlling water levels in open channels because of the ability of the gates to handle flow surges with limited depth changes. While water level control is useful, operators also need to know the flow rate at each gate to better operate the system. Empirical equations were developed from laboratory testing to predict the discharge over leaf gates. These equations can ac curately determine the flow rate in the field of a properly ventilated free-flow overshot gate to within 6%. These equations are valid for values of measured head to weir height ratios less than 1.0 and for gate angles between 16 and 63, spanning the typical oper ating range. Additional equations can be used to pre dict the discharge of a submerged overshot gate; how ever, the degree of accuracy was not clearly defined.

Subject Headings: Gates (hydraulic) | Water discharge | Water level | Flow rates | Open channels | Laboratory tests | Empirical equations | Ventilation

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.

The BayDrive is a remotely operated farm canal gate actuator that makes surface irrigation less labor-intensive and more flexible so you can improve yields and reduce water use.

The BladeValve is a remotely operated high-flow pipe valve that makes surface irrigation less labor-intensive and more flexible, providing the freedom to irrigate without having to be on-site.

I am using a sluice gate with an ogee inline structure. I have never worked directly with an ogee weir and HEC-RAS asks for inputs like "Spillway approach height", and "Design energy head". I am not quite sure what this is in reference too. Is there a post or reference manual somewhere that explains this more in depth?

Chris, we have a model with these sorts of overshot gates, that run the entire length of a dam. We are modeling these gates as initially closed, and as a large hydrograph comes through the gates fail and are fully open. Then during the same hydrograph we are trying to model a breach of the inline structure. However, the results of the "with breach" case match the results of the "no breach" case exactly. It"s as though RAS is treating the breach opening like it"s not there, or that water cannot flow through it. Is this true for RAS, that it does not recognize a breach that is below an overshot gate? I ask because if we take the gate out and just pretend that they were open the whole time so that there is only the inline structure, the resulting hydrograph shows the impact of the breach. Thanks Chris.

Cory- That is intriguing. I"ve never run into that before, but I can see how there might be some unintentional conflict in the code with breaching under a gate. Can you send me your model using the debug report (http://hecrasmodel.blogspot.com/2008/12/hec-ras-debug-report.html) and I"ll see if I can see what is going on? Thanks-cgoodell@westconsultants.com

I was wondering why sometimes different kinds of gates( I mean overflow and underflow gates) is being used in the same check structures. I have seen many checks with five gates with 2 under flow gates on side and 3 overflow in middle. what is the purpose of such a design? Furthermore In time of operation do all gates open together or not?

Mike, honestly I don"t know the typical purposes of such gates. I have seen them used for fish passage, where the multiple outlet options give fish a preference for how they want to pass. Otherwise, not sure…

Hi, I am a relatively new user. I am confused about a simple thing. I want to model a overflow structure with around 15 gate openings. Do I need to draw a solid embankment extending from the starting to the ending of the gates using the weir/embankment option under inline structure before defining the gates? Or do I need to keep opening in the embankment?

I like to model radial gates and sluice gates with broad crested weir. Is it possible to use broad crested weir with radial gates. Even though in the selection dialogue box it is there, I doubt that, as all the explanations related with radial gates are drawn with ogee spillway.

Hi Chris, thanks for pointing out this option! One thing is not clear to my however: How can I control the gate"s Crest Level (as opposed to the Gate Opening Height)? Is the only way to do this by implementing a closed top overflow gate and applying negative opening heights to it so as to keep the gates closed at all times and only allow for flowing over the gate"s top? Or is there an option using an Open Air gate as well? As far as I can tell the Unsteady Data Editor only provides a possibility to enter a timeseries for the Gate Opening Height; not for the Gate Crest Level.

Siebe, with overflow gates, the gate opening value you enter in the unsteady boundary condition is measured from the maximum gate top elevation (gate fully up) to the actual gate top elevation. For example, you set the Height in the overflow gate geometry properties to 4 meters. And the gate invert elevation is 0 meters. If you put in a gate opening height of 1 meter in the unsteady flow boundary condition table, the gate will be open so that the crest of the gate is at elevation 3 meters.

Thanks Chris! It"s rather embarrassing how long it took me to understand the concept :"(. In The Netherlands we simple don"t have any gates that move downwards in order to open up. All of our gates are opened by pulling them up, so it took a little mind bending to understand it.

Since RAS doesn"t have a double door type gate built in, you have to do some sort of workaround. If you can accept a little bit of error during the opening/closing sequence, you could just pick one of the available gates and try to make it work that way. This might be okay if the gate opens/closes relatively quickly. Or, you could develop your own rating curve and model the gate with user-defined curves. The problem with this is that user-defined curves are tailwater independant, and based on your description and photos, that is not the case for your gate. That leaves you with writing rule scripts. It"s sort of complicated, but you could develop rating curve tables for a range of tailwaters, and use rules to pick from the correct table, based on the computed tailwater. That"s probably what I would do if I needed it to be super accurate. Otherwise, I"d probably just go with one of the built-in gates available in RAS.

sir i am not getting that which height is called as invert height/level of gate. radial gate discharge coefficient and trunnion height of gate please help me out

That is a great article. I am facing a problem and interested in your opinion. I have to model a two boarded gate. My problem is that this type of gate allow an adjustable overflow height and can be opened from the bottom in the same time as well, or lower both board to a minimum overflow height, or raise both board to make a huge opening. Is this even possible? i am thinking on putting a normal gate and an overflow gate right on top of each other but not sure program van handle it.

I like your idea for a solution. I think you can put one on top of the other as different gate groups. However, if the program doesn’t like that, you can always put one next to the other. Good luck. Let me know how it goes.

The only issue i encountered so far is with closed top overflow gates i receive a warning about overlapping gates but it can be ignored and works fine. With open air solution there is no warning.

A penstock is a water control gate or structure that controls flow. Penstocks may also be known as Sluice gates, Slide gates or Stopgates. Penstocks are designed for flow regulation, diversion, level control or isolation.

AWMA is a renown penstock supplier, manufacturing high quality, high performance water control gates for all industries. Aluminium and stainless steel water management products are supplied as standard designs or tailor made to meet specific site requirements. Technical Sales Managers located in Australia and New Zealand are available for early contractor involvement and site inspections as required.