ATI gasoline aux tank test pressure
In the right kind of meeting I would say: "Hi, my name is Arnold and I am an engineer", but this isn't that type of meeting. Before I buy a new gas pickup, can someone tell me the test pressure on t...
Forum Discussion
One other tidbit to consider. It might not be necessary to close off the rollover vent on the deck tank, and make a closed system. Taking the weight of gasoline to be 6.3 pounds per gallon, you only need about 3 feet of head to equal 1 psi. Now, for the EVAP system the test pressure is 1 psi, so the operating pressure is lower. This explains why in the installation instructions, it is suggested that you may have to close up the system, not you must plug or plumb a return from the rollover valve. You still need a return line from the gas tank to the deck tank. ATI sells a fill line insert, that has two taps, one for fill the other for return. This would make a simple and safe system that does not set a check engine light. You are close on pressures, but I will try the safest/easy way first.
