TriStar D400 Manhole covers
Tristar D400 ductile iron access covers fully comply with BS EN 124:2015 and carry the BSI Kitemark. Tristar contains innovative design features that mark it out from the competition.
Enlarged frame corners
Dissipate the load
Traffic sends vibrations through every installation, this vibration will transfer to the foundations, potentially eroding them.
Enlarged frame corners help to disperse the energy and minimise damage. They provide a larger surface area for the energy to transfer through. This helps provide your installation with the longest life possible.
We designed our Tristar D400 manhole covers to last. All rectangular covers in the range have enlarged frame corners.
Manhole covers - Square
Available options and accessories
Rapid frame raising system
ClickLift eliminates the time and resources required to dig out and reinstall frames to suit the final adoptable surface. This eliminates the potential damage to manhole covers during construction and removes the potential for residents' claims for damage to their vehicles and massively reduces disruption. ClickLift provides housing developers with huge savings in terms of time, money and hassle. Allowing whole estates to have their covers raised to the final surfacing level, in as little as a few hours.
The hard hat for your ironwork
Armadillo is a complete range of protector shells, designed to be placed over manhole covers and gully grates to provide enhanced protection during the construction phase.
Armadillo provides protection from construction site traffic, including tracked vehicles, and can be easily removed when the final surfacing is completed. This ensures manhole covers and gully grates can start their service life in ‘as new’ condition to optimise longevity.