Cast Iron Slide

Cast Iron Slide

Hydro Gate® cast iron slide gates, formerly known as sluice gates, are used to control the flow of fluid through openings under a face or seating head, and openings under a back or unseating head. With seating or face pressure, fluid exerts a force on the front of the gate. The pressure of the water forces the gate slide against the frame. In the design of a structure where cast iron slide gates are used, place the gate so that it will be subjected to a higher seating head whenever possible. When this is done, a lighter gate can be used, and is usually more watertight.

The majority of gate applications can be handled by the Hydro Gate Heavy Duty HG560 Standard Head Series, which has a minimum seating rating of 55 ft and 20 ft unseating. We offer custom casting design and analysis for applications requiring higher heads.


  • Sewage treatment plants
  • Power plants
  • Dams
  • Fish hatcheries
  • Water treatment plants
  • Flood control projects
  • Industrial water control projects