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Contact SupplierWe are offering api 20'' aluminum alloy manhole cover for tanker truck parts.
Manhole cover is installed on the top of the tanker to prevent the inside fuel from leakage when the tanker is over rolled.with pv vent inside to adjust the pressure.when there is pressure differences inside and outside the tanker, it will automatically inlet or exhaust air to adjust the pressure so that it can ensure the safety and environmental protection. It is suitable to transport petroleum, diesel,kerosene, and the other light fuel,etc.