Description
Dewatering deep excavation shafts and hillside trenches overburdens standard utility pumps with excessive head pressure. The Multiquip 2 In. High Head submersible pump moves dirty ditch water at 87 GPM with an impressive 47 feet total head. Pulling 8.6 Amps at 115 Volts, this 1 HP unit clears vertical lifts. The bottom strainer screen clogs if laid flat in mud.
Multiquip builds this wet end using a die-cast aluminum motor housing and a ductile iron volute to withstand abrasive rock grit. The semi-vortex ductile iron impeller spins inside a wear-resistant casing, pushing water upward past the motor jacket to provide continuous electrical cooling. Dual silicon carbide mechanical shaft seals run in an independent oil bath to block abrasive sand migration. An internal thermal protector shuts down current during low-voltage or locked-rotor events.
Field Hardware Performance Matrix
Deep foundation pits and hillside grading require high-pressure lift without sacrificing jobsite portability. This submersible unit utilizes top-discharge flow architecture and rugged wear metals to move water out of deep excavations.
- 1 HP single-phase continuous-duty electric motor delivers 3450 RPM of pumping torque on standard 115-Volt circuits.
- 2-inch NPT top discharge port routes fluid across the motor housing for continuous cooling during low-water operation.
- Ductile iron semi-vortex impeller passes spherical solids up to 0.25 inches without binding or excessive wear.
- Dual silicon carbide mechanical seals run immersed in an oil reservoir to survive abrasive construction ditch sand.
- 25-foot heavy-gauge rubber power cord features a molded strain relief collar to prevent wire pullout during drops.
- Built-in thermal sensor disconnects electrical power before winding insulation temperatures exceed safe operating limits.
- Rugged cast-iron strainer base prevents large stones from entering the volute while supporting pump upright posture.
Dyno Load Realities Heat Data
Under dyno tank resistance at 3450 RPM on a 115-Volt line, current draw measures 8.4 Amps while pushing 58 GPM against a 30-foot head. Operating against a 40-foot head reduces flow to 28 GPM while current draw climbs to 8.9 Amps. Motor casing skin temperature stabilizes at 132°F in 72°F sump water under continuous run cycles. Acoustic emissions register 61 dBA at 3 feet distance during full submersion. The internal thermal safety switch trips inside 5 minutes if supply voltage drops under 105 Volts.
Field Service Application Limits
Weighing 37 pounds, this pump lowers down manholes using a dedicated lifting rope secured to the steel handle. Do not use this pump to move raw municipal sewage, fibrous septic waste, or thick bentonite drilling mud. Stringy fibers wrap the impeller shaft, overheat the lower mechanical seal, and cause motor burnout.
- Inspect the lower mechanical seal oil through the hex plug screw every 300 operating hours for moisture.
- Clean hard-packed clay and gravel from the base strainer holes before storing the pump in tool cribs.
- Check the heavy rubber power cord for jacket tears or flat spots prior to every site deployment.
Commercial Warranty Package Inventory
Multiquip backs this submersible pump with a 2-Year limited commercial warranty against defects in materials and craft. The box contains the complete ST2047 pump unit, a 2-inch NPT male hose nipple, the factory-wired 25-foot power cable, and an operator manual with an exploded parts diagram and seal part numbers.