P: 317-636-1111 | F: 317-636-5467 | E: sales@bbcpump.com |

BBC Pump and Equipment Company, Inc.

  • Home
  • Markets
    • Commercial
    • Fire Protection
    • Industrial & Process
    • Municipal Water & Waste Water
  • Products
    • Pumps
    • Pump Packages
    • Boilers
      • Hot Water Boiler
      • Steam Boiler
    • Burners
    • Sealing Technologies
      • Gasket
      • Mechanical Seals
      • Packing
      • Polymer Seals
      • Seal Support
      • SpiralTrac
    • Controls and Monitors
      • Pump Control
      • Boiler Control
    • Pump Accessories and Valves
      • Basins and Accessories
      • Fire Protection Accessories
      • Fittings
      • Pump Controls
      • Valves
    • Air & Sediment Separators
    • Tanks
    • Heat Exchangers
    • Steam Specialties
      • Steam Trap
      • Regulator Valve
    • Composite Coating
      • Concrete Coatings
      • Metal Coatings
    • Maintenance Specialties
      • Barrier Fluid
      • Corrosion Control
      • Lubricant
      • Lubrication Dispensers
      • Metal Working Fluid
      • Solvents & Degreasers
    • Motors
    • Water Heaters
  • Manufacturers
    • Pumps
      • Aurora
      • Brinkmann Pumps
      • CIPC Pitbull
      • Cornell
      • Ebara
      • Fairbanks Nijhuis
      • Grundfos
      • Gusher
      • Hidrostal
      • Hydra-Cell
      • Hydroflo
      • Hydromatic
      • Knoll
      • Pentair Aurora Layne Verti-Line
      • MP Pumps
      • PACO
      • QuantumFlo
      • Peerless
      • Taco
      • Tsurumi Pump
    • Boilers
      • Aldrich
      • Riello
      • Sellers Manufacturing
      • Unilux
    • Burners
      • Riello
    • Mechanical Seals
      • Chesterton
    • Accessories and Valves
      • AK Industries
      • American Wheatley
      • Conery
      • Chesterton
      • Guardian Fire Equipment
      • Sterling / Sterlco
      • Taco
      • USF Fabrication
      • Watson McDaniel
      • Watts Water Technologies
      • Wessels
      • Zurn Wilkins
    • Controls
      • Digital Control Company
      • Omni-Site
      • Sigma Controls
      • Square D by Schneider Electric
      • USEMCO
      • Thermodynamic Process Control
      • Wastewater Level
    • Motors
      • Baldor
  • Service
  • Company
    • Careers
    • Staff
  • Contact
Home / Products / CU321 Variable Speed Drive

The Grundfos CU 321 is a constant pressure control system designed for use with 4″ larger Grundfos SP pumps and motors. This wall mounted system maintains a constant pressure within the maximum pump performance in spite of varying water consumption.

Applications

For 4″ or larger wells:

Domestic and light commercial water supply
Irrigation
Livestock watering
Water transfer

Features & Benefits

Complete solution from one manufacturer
Easy setup: Simply select pump model and choose pressure setpoint
Four pump choices: Offered in most popular sizes, both 3 and 5 hp: 15, 25, 40 and 75 gpm
Matched pump and motor: 3 hp pump on 3 hp motor and 5 hp pump on 5 hp motor
Respects original operating designs; operates pump and motor within its designed rpm and hp ratings
Built-in protection features: soft-start, dry run, overload, over/under voltage, sensor alarm
Wide voltage range: 3 hp unit; single phase 208-240 VAC (+/- %) – 5 hp input; single or 3-phase 208-240 VAC (+/- %)

Grundfos Logo

Technical Data | Related Products

Manufactured by: Grundfos

Additional Information

Ask a Question

  • This field is for validation purposes and should be left unchanged.

* Required Field
** Territory restrictions apply for most products.

Technical Data

Refer to Product Datasheets for Additional Technical Information

BBC Pump and Equipment Co.

777 North Tibbs Avenue
Indianapolis, IN 46222

P: 317-636-1111
F: 317-636-5467
sales@bbcpump.com
service@bbcpump.com

M-F, 8:00 AM - 5:00 PM

Indiana’s Pump Experts Since 1981

Our mission is to provide customer oriented service through the proper application of quality pump equipment.

BBC Pump and Equipment Company supplies superior pumps, equipment and systems; designed, installed and serviced by the best engineers and technicians in Indiana.

Search BBCPump.com

Copyright © 2023 BBC Pump and Equipment Company, Inc. · Log in