Stanley SM50100 Hydraulic 3" Submersible Pump

The Stanley SM50100 Submersible Hydraulic Pump delivers reliable, high-capacity dewatering performance with a compact, rugged design built for tough jobsite conditions. This fully submersible, centrifugal-type pump requires no priming and is capable of pumping up to 500 gallons per minute (1890 L/min), making it ideal for removing water from vaults, manholes, basements, and other confined spaces.

Featuring a contaminant-tolerant gear motor that drives a cast stainless-steel semi-closed impeller, the SM50100 is designed for continuous high-speed operation and long service life. A series of seals around the drive shaft help keep hydraulic fluid and pumped water separated, allowing the pump to run dry without sudden seal failure under typical operating conditions.

Built for ease of use and maintenance, the SM50100 includes dripless flat-face HTMA quick disconnect couplers for fast hookup to hydraulic power units, a 3-inch discharge connection compatible with camlock fittings, and easy access to the pumping chamber for cleaning. It can draw water down to a shallow depth (approximately 3.5 inches), supports handling of water with up to about 10% solids, and features lifting eyes for convenient placement and retrieval on site.

Ideal for utility crews, municipal maintenance teams, and contractors, the Stanley SM50100 combines high flow capacity, submersible versatility, and trusted hydraulic performance for dependable dewatering in challenging environments.