European Stainless Steel 304 Manhole Cover for Oil Tank Accessories

European Stainless Steel 304 Manhole Cover
The manhole cover is installed on the top of the tank truck and has built-in breathing valve and emergency exhaust functions.During the oil transportation process, the built-in  breathing valve keep the internal pressure balance with external pressure in the tank.When the pressure in the tank rises sharply, the emergency exhaust device will automatically open and release the internal pressure. Even in the event of an accident, the anti-overflow device of the breathing valve can still remain sealed to prevent occurance accidents.

Product details :

Feature 
1, Reserve positions to install overfill protection, vapour recovery or dipstick accessories .
2, Durable and corrosive-prevention . 
3, Automatical seal to avoid leakage . 
4, Explosive-prevention  .
5, Meet international safety standard  . 

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