Actually both of those tanks have vents. On the pressure tank there is a vent by loosening the tank cap and there is also a pressure relief valve inside the tank that pops open any time the tank sees more pressure than the set pressure on the relief valve which is a safety feature. Around 4psi or less. On the single line tank there is also a tank vent located at the fuel connector. You will see two small "Pins" that get depressed when the fuel connector is connected. One is to start fuel flow and the other it to allow the tank vent to open and work.
Actually both of those tanks have vents. On the pressure tank there is a vent by loosening the tank cap and there is also a pressure relief valve inside the tank that pops open any time the tank sees more pressure than the set pressure on the relief valve which is a safety feature. Around 4psi or less. On the single line tank there is also a tank vent located at the fuel connector. You will see two small "Pins" that get depressed when the fuel connector is connected. One is to start fuel flow and the other it to allow the tank vent to open and work.
can you please show how to rebuild one
Nice video do you know what fuel line size that is or I should get mine was all crusty