Kevin to adjust the relief valve pressure on the top of the valve right next to the rubber boot there is a big nut,on top of it there is a crown nut with a lock nut underneath..back off the locknut and turn the crown nut in to raise the relief valve pressure and loosen it to turn the pressure down..be sure to retighten the lock nut to lock the setting down.You should have gotten a instruction sheet with the valve..Prince is usually pretty good about that.