High-Strength Steel Sluice Gate River Gate Valve With Stainless Steel Waterstop for River Flood Control & Hydraulic Engineering - Chinese Factory

Clear debris, vegetation, and obstacles from the area.

Level the ground to support heavy equipment (cranes, forklifts) and prevent instability during lifting.

Set up temporary barriers or safety zones to restrict unauthorized access, especially near water bodies or excavated areas.

Verify foundation readiness: For gates mounted on concrete structures (e.g., dam spillways, canal walls), the concrete must be fully cured (typically 28 days for standard mixes). Inspect the concrete surface for flatness, alignment, and embedded anchor bolts (if specified); repair irregularities (cracks, uneven surfaces) with high-strength mortar or epoxy.

A laser level or spirit level ensures the frame’s top/bottom edges are horizontal, with tolerances typically ±1 mm per meter.

A plumb bob or digital inclinometer confirms the frame’s vertical members (stiles) are perfectly vertical—this minimizes friction when the gate leaf moves.

Adjust by adding/removing shims between the frame and foundation until all tolerances are met.

For concrete foundations with embedded anchor bolts, tighten nuts gradually (in a crisscross pattern) to avoid uneven stress. Use torque wrenches to reach specified tension (e.g., 300–500 N·m, depending on bolt size).

For surfaces without pre-embedded bolts, drill and set expansion bolts or chemical anchors into the concrete to ensure a secure bond.

Electric Systems: Mount motors on a sturdy base plate, align with the gate’s drive screw or chain, and connect via couplings. Route wiring through conduit (to protect against water/corrosion) and link to a control panel with overload protection and emergency stop features.

Hydraulic Systems: Mount hydraulic cylinders on brackets adjacent to the gate, connect hoses to a pump unit, and fill the system with hydraulic fluid. Conduct pressure tests to check for leaks, and verify cylinder alignment to ensure even force application on the gate leaf.

A primer (epoxy or zinc-rich primer) to enhance adhesion and corrosion resistance.

Intermediate and topcoats (polyurethane or acrylic) to provide UV resistance and a durable finish.

Apply coatings with spray guns or brushes, and observe strict drying times between layers. Use a gauge to measure dry film thickness (DFT) and ensure compliance with specifications (150–300 microns).

Smooth movement without binding or unusual noise.

Proper function of limit switches and safety features.

Consistent performance of the operating mechanism (e.g., motor amperage, hydraulic pressure).