Min. Flow Rate (GPH): 178 Body Material: Stainless Steel External Relief: Not Required By-Pass: Yes GPH of Water @ 50 PSI: 193 GPH of Water @ 100 PSI: 190 GPH of Water @ 150 PSI: 186 GPH of Water @ 200 PSI: 182 HP @ 200 PSI: 3/4 GPH: 190 GPH of Water @ 250 PSI: 178 Relief Valve PSI Setting: 200 Country of Origin (subject to change): Mexico