The manhole tops are structures with a removable cover used on services, drain and sewer to grant access and inspection to underground chambers. To the same extent, the gullies are similar assemblies in this case with slotted tops, designed to receive water for discharge into the drainage systems.
Link manhole tops and gullies designs, provide an efficient securing feature called "Smartlock". The elastic properties typical of ductile cast iron, applied onto lock bars, allow the securing of the tops to the relative frames avoiding accidental or unauthorized openings and in the same time greatly reducing clatter. Smartlock is available on all C250 and D400 manhole tops and Gullies.
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