By Heather Burlingame, Senior Production Editor | September 28, 2010
Three portable, 2-inch submersible pumps—the ST-2037, ST-2040T and ST-2047—remove water from confined areas. Maximum flow ranges from 73 to 87 gallons per minute. Other improvements include internal pump casings and lower running amps. The pumps weigh from 31 to 34 pounds and have 1-hp engines.