I would like to increase my water pressure also. My pump is in the house. It is a Square D. It only has one spring loaded nut. It is wired for 110 but could also be wired for 220. Any help would be great.

Turn the spring loaded nut clockwise a full turn with the power turned off. Turn the power back on and see what you have. Keep adjusting until you get where you want to be. Most people will tell you that a 40# cutin and a 60# cutoff is about as far as you want to go.

BTW, at what pressure points does your pump cutin/off now?