P/V vent is installed on the top of the tanker. When there is pressure difference inside and outside of the tanker, it can adjust pressure difference by p/v vent inlet and outlet air to make the balance.
Function and Features
1.) No leakage when over rolled
When the tanker over rolled at the certain angle, it will automatically full closed to prevent the inside fuel spill out.
2.) Superior work
High precision spring makes it work more accurately
3.) Surface treatment
Valve body casting forming, aluminum alloy surface is passivated.