Hydraflo™ H3NC High-Head Non-Clog Pump

High-Head Hydraulically Non-Clog Submersible Pump

The Hydraflo™ H3NC high-head non-clog hydraulic submersible pump is designed for use in the toughest environments. These non-clog pumps never quit—helping to improve your bottom line.

H3NC pump

Available for Rent

While typical Waste Water Treatment Plant bypass operations require eight water pumps to handle the primary flow and 1-2 extra pumps with only 25% redundancy, just four H3NC 20″ pumps can handle the full plant bypass with 100% redundancy*. 

MWI developed the Hydraflo™ H3NC non-clog pump as a simpler, more robust solution. These hydraulic submersible pumps outperform other bypass pump systems and lift stations with their efficiency, cost-effectiveness, and space-saving design. Available with electric or diesel drives, one H3NC 20” system with four pumps and drive units uses 50% less space than traditional bypass pump systems. The Hydraflo™ non-clog pump also has a 200% larger handling capacity for solids up to 6” and a flow of 25MGD per pump.

Additionally, the entire H3NC system can be installed in half the time of a typical plant bypass and is expertly maintained by our servicemen during the length of your pump rental. To get the job done right, choose the security and efficiency of the H3NC non-clog pump to handle your full plant bypass operation with 100% redundancy.

  • Hydraflo™ non-clog pumps easily handle solids 200% larger than traditional centrifugal pumps, and up to 6” spherical solids
  • High efficiency & performance – with up to 90’ TDH and 18000 GPM / 25MGD per pump
  • Small footprint – total system takes up to 50% less space than conventional bypass pump systems
  • Low-upfront & operational costs – up to 40% less energy consumed*
  • Unique pump developed by MWI for the toughest pumping jobs
  • Full sewage treatment plant bypass with 100% redundancy by using only four H3NC 20” pumps
  • Reliable – runs dry indefinitely with oil-lubricated seals and bearings
  • Closed two-bladed impeller handles trash and sewage with ease
  • Available in electric or diesel drives
  • Install in half the time of a traditional bypass system
*As compared against skid-mounted, end-suction centrifugal pumps operating in parallel, and at suction lifts greater than 15′.

H3NC NON-CLOG PUMP – Performance Curve

Hydraflo performance curve
Performance curves for each bowl size are available upon request or by visiting these pages: 



  • Flood Control
  • Industrial
  • Bypass Pumping
  • Stormwater Drainage
  • Construction Dewatering
  • Agriculture
  • Aquaculture
  • Quarries
  • 3000 Drive Unit
    – Diesel engine – 300 HP at 1800 RPM
    – Engine panel with tach, hour meter, high coolant
    temperature and low oil pressure shutdowns plus over speed protection
    – 187 gallon vented fuel tank with extra large filler and fuel gauge
    – 40 gallon hydraulic fluid tank
    – Safety shutdowns for low hydraulic oil, excessive vacuum
    and high hydraulic oil temperature
    – Equipped with an internal suction strainer, return filter, external
    sight gauge for hydraulic oil and vented hydraulic oil filler cap
    – Hydraulic pump – Dennison Vane type
    – Weight: 6,500 lbs (dry)
  • H3NC
    – Hydraulic Motor – Vane type
    – Impeller – Closed two-bladed ductile iron
    – Shaft material – 300 series stainless steel
    – Diffuser – Ductile iron
    – Discharge – 20″ ANSI
    – Hydraulic quick disconnects – 2” Supply, 2″ return, 3/4″ case drain
    – Mechanical seal – Silicone carbide – Hydraulic-fluid bathed
    – Bearings – Angular contact grease packed
    – 50,000 hours – Minimum life
    – Weight – 4,800 lbs
    – Coating – Epoxy

Solutions to Common Problems & Application Gallery

H3NC Assembly

Hydraulic Motor, Bearing Box, Diffuser Wear Ring, Impeller Wear Ring, Impeller, Intake Wear Ring, Intake, Stand
Cut away view of the H3NC assembly

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