The SM21 is the ideal pump for areas of confined space and small openings. The SM21 pumps up to 300 gpm (1125 lpm) at a 50-foot head. The cast iron impeller is within 34 of an inch of the base allowing the pump to remove more liquids than other pumps. The SM21 features a lifting eye 2.5 in. NPTF discharge and is furnished with hose whips and flush face quick disconnect couplers.

The Stanley SM21 Water Pump is one of the lightest and most durable pumps available. It’s capability of pumping 300 gpm (1135 lpm) at a 50 foot head make it ideal for vaults, manholes and more specifically in confined narrow openings.
The SM21 will outpump most all gasoline engine driven pumps. There is no recoil starting, priming or suction hose as with gas engine driven pumps. It can be run dry without damage.
Submersed into the water and with its easy hookup to a power unit, the SM21 is instantly pumping.
The cast iron impeller of the SM21 is within 3/4 of an inch of the base allowing the pump to remove more liquids than other pumps. With only a few moving parts, the SM21 is virtually maintenance free.

Capacity - 2-1/2 in. Discharge
Performance - 1135 lpm
Flow Range - 15 - 34 lpm
Pressure - 70 - 140 bar
Ports - 6 SAE O-Ring  
Connection - 3/8 in. Flush-Face Quick Disconnect Coupler
Hose Whips - Yes
Motor - Integral
Discharge Size - 2-1/2 in. Female Pipe Threads

Weight -  9.1 kg 
Length - 40.6 cm 
Width - 15.9 cm