Added Security for Tanks Fuelwhich secure your fuel tanks and prevent costly oil fuel from theft,tampering, siphoning and vandalism. Just put a padlock in lock hole that is right on one of the tabs on the base and the tabs will hold the lock
Easy to Use: Align the vented gas cap with the notch, push down and clockwise twisting to tighten the diesel tank cap all the way. To remove transfer tank cap, counter-clockwise twist slowly to the notch to vent pressure. Push down and twist to lift pressure vent fuel cap and remove
Heavy-duty Transfer Fuel Tank Cap: Made of high quality materials featuring waterproof and corrosion resistance to long term serve your tank
Both Directions Vent: When loosing the diesel tank cap, the venting pressure tank cap vent pressure inside the fuel tank to outside and release dangerous vapor build up to prevent over-expansion of the diesel fuel tank. And vented fuel cap allow air into the diesel transfer tank to prevent vacuum forming and collapse the tank when you draw out fuel