Manhole cover for tank trucks and containers for transport of classes 5.1, 6.1 and 8 dangerous material (ADR international standards). The manhole cover can have a variable number of rod bolts depending on the working pressure inside the tank. Welding ring in stainless steel have variable heights.
Available accessories: PTFE, Viton, NBR and natural rubber gasket. Stainless steel lever nuts on demand.
Welding ring for the manhole cover compatible with all carbon steel manhole covers versions.