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Stanley Submersible Pumps – SM20 and the SM21

The SM50 pump discharges an impressive 500 gallons per minute (1890 lpm) while it’s small size allows it to fit in a box 11 inches deep by 10 inches square (26.7 cm x 25.4 cm). These pumps can run dry without damage and can move water that is debris-filled.

Pumping power to move… a lot.

The Stanley SM20 is one of the lightest and most durable pumps available. Completely submersible and pumping 250 GPM at a 10 ft. head and moving solids up to 5/16 of an inch makes it ideal for vaults and manholes. It features a cast aluminium inlet and a steel impeller. Tool Weight: 18 Lbs. Flow Range: 4-9 GPM

The Stanley SM21 sump pump is ideal for small opening and confined spaces. It can remove more liquids than other pumps since the cast iron impeller is only 3/4 of an inch from the base. It can pump 300 gpm / 1125 lpm at a 50 foot head.

Specifications:

 
MODELPART #WEIGHTHEIGHTWIDTHFLOW RANGEOUTPUTDISCHARGEIMPELLER
SM20SM204310118 lb / 8.16 kg7.5 in. / 19 cm9.6 in./24cm4-9 gpm / 15-34 lpm250 gpm / 946 lpm2.5 in. / 63.5 mmSteel
SM205210118 lb / 8.16 kg7.5 in. / 19 cm9.6 in./24cm4-9 gpm / 15-34 lpm250 gpm / 946 lpm2.5 in. / 63.5 mmUrethane
SM205310118 lb / 8.16 kg7.5 in. / 19 cm9.6 in./24cm4-9 gpm / 15-34 lpm250 gpm / 946 lpm2.5 in. / 63.5 mmUrethane
SM21SM215110125 lb /11.34 kg16 in./40.6 cm6.25 in./15.9 cm4-9 gpm / 15-34 lpm300 gpm / 1125 lpm2.5 in. / 63.5 mmSteel