Sequence 4000 Series

The Sequence 4000 Series is a self-priming external pond pump engineered for koi ponds and water features that demand higher flow with minimal energy consumption. Equipped with 2-inch ports and a TEFC motor running at 1725 RPM, this pump moves 3,600 to 8,220 GPH while keeping wattage impressively low — the smallest model draws just 227 watts running around the clock.

Larger ports mean less friction loss through your plumbing, which translates to more gallons actually reaching your pond, filter, or waterfall. The self-priming design lets you mount the pump above water level, making seasonal maintenance and winterizing significantly easier. Every model runs on standard 115V household power, so installation is straightforward with no special wiring.

With five models ranging from 1/6 HP to 1/2 HP and up to 22 feet of head pressure, the 4000 Series fits a wide range of pond setups — from dedicated filtration loops to combination circulation-and-waterfall systems. Backed by Sequence's 5-year warranty, this is the pump serious koi keepers reach for when they want proven performance without the high electric bill.