The hydraulic downward-opening weir gate is used in pipelines, culverts, or channels. It serves for flushing, preventing backflow, and regulating purposes. The equipment opens downward, not occupying the upper space, hence the name downward-opening weir gate.

Low-flanged Weir Gate, Hydraulic Low-flanged Weir Gate, Adjustable Weir Gate, Stainless Steel Weir Gate, Stainless Steel Adjustable Weir, Flip-type Weir Gate, Rainwater Diversion and Regulation Weir, Source Control and Pollution Interception Weir Gate, Hydraulic Low-flanged Adjustment Weir Gate

Product Features
Compact structure, weir gate opens downwards, does not occupy upper installation space, and does not affect the landscape on the ground.
2. Long service life, equipped with anti-locking structure between the gate and guide rail, resulting in minimal wear on the sealing surface.
3. The weir gates are primarily made of stainless steel焊接, offering excellent resistance to acids, alkalis, and most corrosive chemicals, as well as to wastewater and seawater.
4. Electric control device, featuring precise positioning and easy operation, enabling both self-control and remote control. Weir gates can be stopped at any height, either on-site or remotely.
5. Simple and convenient maintenance; in case of leakage after years of use, just lift the gate and replace the rubber sealing ring on the door frame, saving time and effort with low repair costs.
Lightweight, about 1/3 the weight of a standard gate. Good sealing performance, using rubber soft sealing, offering excellent sealing effect and bidirectional sealing capability.

The early liquid-powered underflow weirs were merely channel and river gate structures, with only simple water storage and drainage functions, their process being simply opening and closing. However, through our company's research, we have found that under certain technical conditions, installing underflow weirs at urban river outlets, especially large outlets, can have a significant effect on improving black and smelly water bodies, separating stormwater and wastewater, and building sponge cities.

Bottom-hinged weirs, Liquid-actuated bottom-hinged weirs, Adjustable weirs, Stainless steel weirs, Stainless steel adjustable weirs, Flip-up weirs, Rainwater diversion adjustable weirs, Source control and pollution interception weirs, Hydraulic bottom-hinged weirs, Bottom-hinged adjustable weirs

The hydraulic slide gate is made of stainless steel 304 material with plates of 10mm thickness or more, offering a longer lifespan than traditional hydraulic gates. Its hydraulic drive system effectively prevents sticking, which is prone in harsh wastewater environments, and operates more safely and stably than electric gates.
Choose a 380V high-power hydraulic pump, which provides ample power for the opening and closing of the gates; double-layer steel wire braided high-pressure hoses are corrosion and pressure-resistant, equipped with position sensors, pressure switches, and bi-directional balance valves, accurately reflecting the gate's status, pressure coefficient, and pressure holding effect. SCADA Control System: Utilizing Siemens PLC, Schneider Electric low-voltage electrical appliances, and other imported electrical components, equipped with ultrasonic level gauges, level sensors, rainfall sensors, and COD water quality online analyzers, accurately measuring various conditions within the cutoff well and providing the control system with correct parameters for action. Features a remote module, high-definition camera, enabling real-time device monitoring and data review on a computer, or remote control of the equipment.

Structure and Working Principle:
The hydraulic downstream sliding weir gate system is mainly composed of weir gates, hydraulic systems, ultrasonic liquid level gauges, and control systems. For easy maintenance in the future, a maintenance groove is usually provided in front and behind the weir gates.
The gate valve is driven and controlled by an opening and closing hydraulic cylinder to adjust the gate's up and down movement. The hydraulic cylinder can be equipped with an automatic control system, allowing for unmanned automatic control of the hydraulic gate valve. Water from the upstream flows over the top of the gate. The gate can be raised or lowered as needed, stopping at any position to control the flow of water distribution or adjust the upstream water level. It can perform various functions, such as flushing, water level control, and flow control.
Ultrasonic level sensors detect water levels on both sides of the weir gate and convert them into electrical signals for the control system. The control system drives oil cylinders on both sides of the weir gate, causing the weir plate to slide up and down in the guide slots. Rubber seals are fitted on both sides and the bottom of the guide slots for sealing purposes (can be three or four-sided sealing). The oil cylinders are equipped with displacement sensors, allowing the weir plate to stop at any position. In the event of a power outage, the system can control upstream water levels, flushing, and prevent backflow, among other functions.

The early hydraulic sliding gate was merely a channel or river gate with simple water storage and drainage functions, its operation being simply opening and closing. However, through our company's research, we have found that under certain technical conditions, installing the sliding gate at urban river outlets, especially large outlets, can be quite effective in treating black and smelly water bodies, separating rainwater from sewage, and building sponge cities.
The hydraulic down-lift weir gate is made of stainless steel 304 material with plates over 10mm in thickness, offering a longer service life than traditional water control gates. Its hydraulic transmission method effectively prevents sticking, commonly encountered in harsh wastewater environments, and operates more safely and stably than electric gates.
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