What PSI Does Vent Cap of DeeZee Truck Bed Auxiliary Tank Release Pressure

Question:

I see the supplied cap on the aux tank, does have some venting capabilities. when you look at the picture supplied, the opening on the right has a regular non venting plug in it. Would it be necessary to install another way to vent the tank? What is the vacuum number at which the cap will start to vent ?? I was going to install a 3 gph pump and shut off solenoid as well is is going in the bed of 2003 f-250 7.3l diesel truck. thanks for your help.

asked by: Carl N

Expert Reply:

I spoke with my contact at DeeZee and the cap of the DeeZee Truck Bed Auxiliary Tank # DZ91752X that you referenced starts to vent at 4 psi. I also showed them the picture you sent in and they said they weren't able to give directions on how it should be wired or installed as it's not one of their pumps. You shouldn't have to vent the tank beyond the cap it already has though.

expert reply by: Jameson C