Civacon Truck Tank Equipment 101

[@efrenmarquez1087]

Thanks Randy. There's a small air valve underneath the 2" manifold product return manifold. What's the reason for that?

[@efrenmarquez1087]

The black 1/2" air valve. What's that for? Is that to open the product return?

[@ericjr8]

How do you turn up the pressure on the hose