Pivotal Edge

Ground operated manhole cover for tanks and trailers

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Put Pivotal Edge to Work For You

You will soon wonder how you ever got by without it. Your load speed will increase, your injury rate will decrease, and your competition will wonder why they are eating your dust!

Built out of plate aluminum

Our next-generation cover is machined from 6061 aluminum for strength, consistency and weight reduction.

Inflatable Seal

An inflatable seal provides a weatherproof seal against the elements... even when the trailer has lost all of its air.


The flange mounts to existing trailer openings using a range of industry standard hardware.

Quick change for maintenance

Improved ease of disassembly and maintenance have been designed into our next generation cover.

Control Box

A single control box, housed in a stainless steel enclosure, can be configured to control from 1 to 4 covers.

Flip over for cleaning

Cleaning the flange and cover no longer require removal of the cover. The cover can now flip open with no disassembly required.

  • Control multiple covers from a single control box
  • No electronics
  • No welding to install
  • Lowest profile design
  • Customer Service


Installation is usually completed in less than 4 man-hours. The cover bolts to existing trailer hardware and air is supplied from the trailer reserve tank. With no electrical connections to contend with, the installations can be done by any service shop. We have taken great strides to provide a cover that can be serviced for years to come, with replaceable bushings to cylinders that can be rebuilt, protected air-line connections, and dedicated air-line routing paths. All of this leads to better serviceability.