Hot water circulatory pumps are generally used to handle hot water with adequate pressure in domestic and other industrial applications. The motor is of two pole asynchronous type with canned rotor portion. All the rotating parts are in contact with pumped liquid and thus it acts as lubricant to motor, shaft and thrust bearings. And air vent plug is provided in the rear end for venting. Compact and rigid design provides reliable service for continuous operation and composite impeller provided for longer life. The rotary switch provided in the terminal can be turned to three different position to adjust the speed based on requirement.