The bidirectional water-stop cast iron gate is a flow control device used in scenarios such as sewage treatment and urban drainage. Its core features include:
Structural Characteristics
Made of cast iron materials (such as HT250 gray cast iron or ductile iron), complying with hydraulic industry standards. The gate consists of a gate frame, gate plate, guide rails, sealing strips, and other components. It achieves bidirectional water-stop through a wedge block device, with leakage controlled within 0.03-0.07 L/m·s.
Sealing Design
Utilizes copper alloy or rubber soft sealing rings, combined with a metal water-stop pair, ensuring effective water-stop on both the upstream and downstream sides. Suitable for bidirectional flow scenarios such as sewage backflow.
Installation and Maintenance
Requires overall hoisting followed by secondary concrete pouring, with the sealing surface gap adjusted to within 0.1 mm. Routine maintenance includes regular lubrication and anti-corrosion treatment. The lightweight design (weighing only one-third of conventional gates of the same specification) reduces maintenance costs.
Applicable Scenarios
Commonly used in sewage treatment plants, urban drainage pipelines, culverts, and other scenarios with high anti-backflow requirements. It can also be used for bidirectional flow control in rivers and reservoirs.