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Double leaf Penstocks

Ultimate variability

  • Quick and Easy to install
  • Lightweight yet robust
  • Virtually maintenance free
  • Ultimate control on flow
  • Low torque to operate


ACE Double leaf Penstocks are a combination of the Undershot and Overshot models. Therefore, allowing precise level control and the ability of quick-release of water for desilting or flood alleviation. Similarly, it allows very accurate level management.


The Double leaf Penstock has two weir plates that pen water. The lower acting as a barrier, and the upper allowing adjustment of the pen level. To flush the watercourse, discharge water quickly, or even clear the water altogether the lower plate can be raised


Double leaf penstocks are relatively lightweight yet very durable. Easy to install commonly with no grouting. In addition, they are virtually maintenance-free. Having many of the same advantages as other ACE Penstocks.


Double leaf Penstocks can be wall, channel or rebate mounted. In addition, all the mounting accessories supplied in the ACE package. Therefore, the majority of Double Leaf penstocks can be bolted and sealed to the wall in less than a single shift. Therefore, no fiddly setup.


The Double leaf Penstock is available with manual drives. If desired they can be electrically operated, along with automation if desired. In addition, lift-height options to ensure sufficient clearance is provided to allow unhindered water flow.


Fully tailored solutions


Double Leaf Penstocks are designed to your specific requirements. Our standard arrangements can be adapted to save complicated construction or modification to existing structures. Although most penstocks have two moving plates, ACE can also provide customised penstocks with fixed plates, or trash screens in place of sluice doors. If you have any special requirements please contact us.


For more information on our previous penstock projects, please see our case studies.


In addition, ACE also supply a variety of other weir penstocks and weir structures, for water level management, isolation and fine flow control. Please click here for more details:

Operation options:

T Key

Pedestal and Handwheel

Automation, including CB Greenbox and Spindle driver

For more details on the Double leaf penstock, or any other equipment, please contact us.



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