Designed, Engineered & Manufactured in the U.S.A.

Viper Pump


  • Designed for low pressure, high volume systems
  • Viper wet end designed specifically for 56-frame motors
  • Large 8" diameter wet end allows for more volume
  • Large 2 ½" intake for improved flow performance and reduced noise
  • Highly versatile wet end can be rotated every 90°
  • 56-frame motor for added strength, cooler operating temperature and longer motor life
  • Two double shielded ball bearings with moisture resistant grease for quieter operation and longer life
  • Thermally protected to extend life expectancy of motor
  • Silicone carbide seals, Viton bellows, 316SS casing, corrosion resistance against chlorine, bromine & salt

1-Speed Viper 56-Frame Pumps

Part No.DescriptionHPVoltsAmpsHZDimension "A"Weight (lbs.)
3711621-1V2 1⁄2" Intake - 2 1⁄2" Discharge4230126011"41
3712021-1V2 1⁄2" Intake - 2 1⁄2" Discharge523016.46011"


2-Speed Viper 56-Frame Pumps

Part No.DescriptionHPVoltsAmps High SpeedAmps Low SpeedHZDimension "A"Weight (lbs.)
3721621-1V2 ½" Intake - 2 ½" Discharge4230124.46011"44
3722021-1V2 ½" Intake - 2 ½" Discharge523016.44.86011"47

Note: 0V for bulk orders.

Pumps and replacement motors that are single speed and one (1) total HP or greater cannot be sold, offered for sale, or installed in a residential pool for filtration use in California,
Title 20 CCR sections 1601-1609.