External P/V Vent Valve for Manhole Cover

P/V vent is installed on the top of the Tanker to ensure the safety when transportation. The design is according to the GB/T 18564.1-2006. High sensitivtity, when there is pressure differences inside and outside the tanker, it will automatically inlet or exhaust air to adjust the pressure it is suitable for diesel, gasoline and kerosene and other light fuel. To the different installment mode, there are internal P/V vent and outernal one.

Benefit and Features:

1.  No leakage when over rolled
When the tanker over rolled at the certain angle, it will automatically closed to prevent the inside fuel spills out.

2.  Superior Work
High precision spring makes it work more accurately.

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