GTMADNS wrote:
Figured it out. There are 6 Valves in compartment 4 are drains and 2 I have no idea but turning one it had normal psi. Thanks guys
I would guess the one you turned (and probably the other unknown one as well) is for winterizing, to enable sucking antifreeze from the bottle with a hose connected...somewhere. One valve to shut off the pump suction from the water tank, and the other to turn on the suction to the antifreeze hose connection, or possibly a two-way valve to do both at the same time.
The other sort of valve you might sometimes find is a water fill valve to fill the tank from the city water inlet. Opening it when trying to use the pump will cause the pump to run incessantly, pumping water from the tank back into the tank. Opening it (if you have it) and operating the valve(s) to winterize lets you pump water into the tank from a container, which is occasionally handy.