Manhole cover 6 lug 6.0mm dish fitted with 80mm Vacuum relief valves

The 6 Lug 6.0mm Manhole Cover is designed and manufactured to comply with the European Standard EN BS 14025, SANS 1518 and the ADR, for the application of transportation of hazardous goods by road. The AMF manhole cover is fitted with a single hinge and secured by six easy fastening eyebolts. Manhole covers can easily be opened to allow for top loading, internal tank cleaning and access to the compartment. The manhole cover is supplied with Hypalon or Viton seals and is fitted with an 80mm vacuum relief valve to prevent a vacuum build up in the tank shell as a result of decreases in tank pressure due to product cooling or decrease in ambient temperatures.