Double seal - fabricated steel covers
Our chequer plate access cover range is one of the most versatile products we manufacture. A large number of standard sizes, frame depths and options are available in single, double and multiple units. In addition non standard units can be manufactured on request. Frame depth is very important in the function of manhole cover assembly, we recommend that all large and intensely used access covers are manufactured 100mm deep.
Twin covers are supported by a removable support beam and wall pockets. All products in this range are constructed from heavy gauge rolled steel plate and section and galvanised to BS EN ISO 1461 after fabrication.
The double seal is achieved by a vertically compressed neoprene gasket combined with a simple labyrinth arrangement that can be filled with grease if required.