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Stanley Submersible Pumps – SM20 and the SM21

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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:

 
MODEL PART # WEIGHT HEIGHT WIDTH FLOW RANGE OUTPUT DISCHARGE IMPELLER
SM20 SM2043101 18 lb / 8.16 kg 7.5 in. / 19 cm 9.6 in./24cm 4-9 gpm / 15-34 lpm 250 gpm / 946 lpm 2.5 in. / 63.5 mm Steel
SM2052101 18 lb / 8.16 kg 7.5 in. / 19 cm 9.6 in./24cm 4-9 gpm / 15-34 lpm 250 gpm / 946 lpm 2.5 in. / 63.5 mm Urethane
SM2053101 18 lb / 8.16 kg 7.5 in. / 19 cm 9.6 in./24cm 4-9 gpm / 15-34 lpm 250 gpm / 946 lpm 2.5 in. / 63.5 mm Urethane
SM21 SM2151101 25 lb /11.34 kg 16 in./40.6 cm 6.25 in./15.9 cm 4-9 gpm / 15-34 lpm 300 gpm / 1125 lpm 2.5 in. / 63.5 mm Steel