The design engineer for the overall piping system can provide this information since the pump's outlet pressure is determined by the site piping, not the pump itself. A pump will develop whatever pressure is required to overcome the static and dynamic head of the piping system. Unless otherwise directed, our standard practice is to size the motor so that the pump can deliver a minimum of 50 PSI, without the motor being overloaded. If the design engineer requires a higher pressure, the motor size may need to increase.