tanker manhole cover

installed on the top of oil tanker and used for injecting oil ,checking gas recovery,mending the internal inlet.

Also can protect the tanker under the emergency. 

When inject oil,the outside temperature's change will lead the tankers inside pressure to change.

Then the manhole cover breathing valve can automatically make the tanker pressure to the normal level.

If some emergency happen ,like the tanker overturn,the breathing valve will automatically close toavoid the tankers explosion when under the fire condition.

Pressure vacuum valve has the automatically seal function,can avoid the oil leakage. 

Before completely open the butt plate,double opening device can make the tankers remaining gas to discharge safely.

We can design different kinds of manhole covers as per customers' requirement

Material:

Body:  stainless steel

Handle: SS

Safety locker: SS

Seal: VITON

Drawing:

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