Sector Gates

These gates are widely used for sea locks at the entrance to marinas where passage through the lock is required under the widest possible tidal range.

Advantages

• Can open or close with a full differential head.
• Operates with water loads from either side.
• Quick operating, typically 60 secs as the gates move through an arc.
• Cuts easily through any silting.
• Curved skin means water loads are transfered directly to the pivot which reduces friction.

Disadvantages

• More complex design of gate structure and sealing.
• Larger civil works due to side recesses.
• Curved skin needs an assembly jig.
• Pivot alignment is critical.