Unique, integral diffuser insures rapid priming Drain plug for easy maintenance of pump Durable corrosion-proof housing for all-weather performance and quiet operation Online part number W3SP1750 is the direct replacement for part number SP1750. The Power-Flo II is a versatile, self-priming pump designed to meet the varying specifications of above-ground and on-ground swimming pools. The Power-Flo II incorporates features usually found only on higher priced in-ground pumps such as self-priming ability, a large 91 cubic-inch strainer basket, a heavy duty motor with stainless steel shaft, and a quick-release "see-thru" strainer cover. Durable and economical, the Power-Flo II continues to set the standard for value and performance for above-ground pumps. Applications Above-ground, small in-ground pools Water fountains Small marine aquariums Pond circulation Self priming Features Designed for quiet operation Heavy-duty motor with stainless steel motor shaft and automatic thermal overload protector for maintenance-free operation Durable corrosion-proof housing for all-weather performance and quiet operation Heat-resistant double sized seal for long motor life Unique, integral diffuser ensures rapid priming Proven performance and reliability from decades of service in the marketplace Clear cover lets you see when basket needs cleaning