The Dupree 3" Power Valve is Designed to operate between 45 and 150 PSI. An air pressure of approximately 50 PSI is recommended for operation. The valve comes equipped with either a ball or T-handle for manual operation when air pressure is not available. Available with 2 types of fittings, straight or 90°. | The Dupree 3" Power Valve is Designed to operate between 45 and 150 PSI. An air pressure of approximately 50 PSI is recommended for operation. The valve comes equipped with either a ball or T-handle for manual operation when air pressure is not available. Available with 2 types of fittings, straight or 90°. |