The Stanley SM20 Hydraulic Water Pump is a professional-grade hydraulic submersible sump pump engineered for demanding dewatering applications where reliability, portability, and high pumping capacity are critical. Designed for utility, construction, industrial, municipal, and emergency response professionals, the SM20 delivers up to 250 gallons per minute (946 LPM) at a 10-foot head while efficiently handling solids up to 5/16 inch (8 mm).

Unlike conventional gas-powered trash pumps, the Stanley SM20 requires no priming, suction hose, or recoil starting. Simply connect the pump to a compatible hydraulic power unit, submerge it, and begin pumping immediately. The pump can even run dry without damage, minimizing downtime and reducing the risk of costly repairs.

Built with an abrasion-resistant urethane impeller and replaceable cast iron inlet wear ring, the SM20 is engineered for long service life when pumping dirty water, gritty slurries, and abrasive materials commonly encountered on construction sites and utility projects. With very few moving parts, maintenance requirements are minimal, helping contractors stay productive in the field.

Key Features

• Pumps up to 250 GPM (946 LPM) for rapid dewatering
• Handles solids up to 5/16 in. (8 mm)
• Lightweight design weighing only 13.7 lbs. (6.3 kg)
• Completely submersible hydraulic operation
• No priming or suction hose required
• Can safely run dry without damage
• Abrasion-resistant urethane impeller for long service life
• Replaceable cast iron inlet wear ring
• Virtually maintenance-free design with minimal moving parts
• Compatible with hydraulic power units delivering 4–9 GPM at 1,000–2,000 PSI
• 2-1/2 in. female discharge connection
• 3/8 in. flush-face quick disconnect hydraulic couplers

Ideal Applications
The Stanley SM20 is designed for a wide variety of pumping and dewatering applications, including:

• Utility vault dewatering
• Manhole pumping
• Construction site water removal
• Trench dewatering
• Stormwater and flood cleanup
• Industrial maintenance
• Municipal water departments
• Sewer and wastewater projects
• Shipyards and marine applications
• Emergency response and disaster recovery