You will need a jet assembly for the end of the pump. The control valve male end screws into the top of the pump and the outlet of the control valve goes to the tank. You can screw a pressure guage in the other connection. You need to adjust the control valve to 20 lbs while the pump is running. This causes the jet assembly to work best. Once there is 20 lbs of pressure you (can) open the control valve wide open if you want.