ESBBVS2 variable speed pond & water feature pump is a High performance High flow energy efficient Industrial grad pump. That features a true 3 inch suction and discharge a large priming pot/ algae trap It comes with 3" quick disconnect unions the ESBBVS2 Variable Speed pump makes programming a breeze by allowing you to choose your flow rate from 0% to 100% of the 19800GPH with the turn of a dial These professional grade self-priming external pumps are specifically engineered to provide years of exceptional performance and reliability with the lowest possible energy consumption and whisper quiet operation, this economical out of water pump are an ideal choice for use in large ponds, fish hatcheries, and commercial water features. Trusted by experienced pond builders worldwide, the ESBBVS2 is also an ideal choice for use with larger Filters and other professional pond filtration systems. ES Big Boys pumps are in a class of their own! Manufactured and assembled in the USA and covered by our exclusive warranty, these durable workhorse energy saving pumps are built to last. Offering exceptional value, the Big Boys are truly the professional's choice.