Aqua Systems 2000 Inc.

Leaders in water management and control

Langemann® Gate

PDF icon Langemann Gate812.9 KB
PDF icon Langemann Gate Details338 KB

Invented by Peter Langemann, the Langemann Gate was developed through a cooperative effort between St. Mary River Irrigation District, Peter Langemann and Aqua Systems 2000 Inc. (AS2I). The Langemann gate, used in conjunction with one of AS2I’s controllers, provides solutions to a host water of control problems. The patented design has gained recognition due to its simplicity, overshot technology and low power requirements.

Application Suitability

A Langemann Gate with controller can either:

  • Maintain a constant upstream water level (such as in check structure) or
  • Provide a pre-determined constant flow to downstream users (such as a turnout)


  • Irrigation check structures
  • Turnout structures
  • Spillway structures
  • Diversions structures
  • Water and sewage treatment plants
  • Flood control structures


  • Superior trash management
  • Low power requirements: The unique distribution of water pressure afforded by the gate configuration and the low friction operating components provide for remarkably low power requirements.
  • Precise Positioning: The Langemann Gate provides positive linear movement in either direction. Convenient staff gauge placement and the linear relationship of the gate and water level provides reliable operating information.
  • Ease of Installation: All but the very large gates are fully assembled for shipping. A small crew and a suitably sized crane can install a gate in a couple of hours.


  • 3CR12 Stainless
  • Stainless steel gate pin
  • Tuffcast rollers
  • Nylon idlers and hinge pin
  • Water-proof roller chain in and omega configuration
  • Efficient helical worm speed reducer
  • NEMA 4/12 electrical panel
  • Overload relay
  • Limit switch
  • Motor starter
  • 12 Vdc or 24 operation for reliability
  • Inconspicuous solar panel


  • 304 Stainless steel components where aggressive water is encountered
  • Operation modes:
    • Manual (hand-crank)
    • Manual Electric
    • Automated – upstream level or flow control
  • Integrated stilling well