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Isolation Penstocks

Isolation Penstocks – Simple but effective

  • Quick and Easy to install
  • Lightweight yet robust
  • Virtually maintenance free
  • Various mounting arrangements
  • Low torque to operate


ACE Penstocks are available in a number of forms, tailored to your requirements. They are manufactured in HDPE and Stainless Steel 316L. Therefore, making them lightweight for ease of handling and installation. Above all, not compromising strength. Installation of the penstocks is very simple, with no need to grout on the majority of applications. All fixings and seals supplied as part of the package. In addition, most penstocks can be fitted and used in a single shift.


Once installed, ACE penstocks require very little attention, as greasing is not required in most cases. The construction of the penstock gate is self-aligning. There are no fiddly wedges and also an integrated EPDM seal.


Although ACE stock a wide variety of sizes of penstocks for quick dispatch. Our equipment can be customised to suit specific requirements. This could be to either adhere to particular specifications or to save complicated construction, or modification to existing structures.


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

Various Applications

ACE also supply a variety of standard mounting arrangements on our penstocks, to save installation time, such as:


  • Face Wall mounted
  • Mounting directly to Plastic pipe with couplings
  • Mounting directly into pipe, using a push-fit spigot
  • Mounting to pipe flanges
  • For more heavy duty applications
  • For chemical applications
  • Inline – for mounting in pipelines


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


As with all ACE equipment, we have a wide range of standard penstock designs for quick dispatch. However, we pride ourselves on our ability to tweak designs to specific requirements. Or we can use our wealth of experience to provide a fully tailored, value-engineered solution. Please see our case studies and tailored solutions for more details of our capabilities. Alternatively, please contact us for more details.


Penstock feature options: (Standard, on request)

  • Non rising spindles, Rising spindles, Hydraulic cylinder, rack and pinion
  • Circular opening, square or rectangular opening
  • Face wall mounting, Side wall mounting, custom design
  • Stepped invert, Flush invert, grouted invert
  • Manual operation, Actuator, Hydraulic Cylinder

Accessories/Operation options:

Spindle extensions

T Key

Pedestal and Handwheel

Automation- Actuators, hydraulics, spindle drivers



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