Overview
- Flows up to 800 m3/h
- Heads up to 66 m
- Power ratings 7.5 - 15 kW
- Discharge connection sizes 80 - 250 mm
- Pump weights 207 - 324 kg
The Flygt N 3153 medium capacity wastewater pump series is designed to deliver sustained high efficiency and clog-free performance for tough applications. The series is available with a wide range of pressure characteristics and discharge connection sizes.
It also has explosion-proof versions and a variety of impeller material options: Hard Iron, grey iron or stainless steel. Flygt N 3153 pumps can be delivered for submersible or dry installation (configurations P, S, T, Z).
N-Technology Wastewater Pump
Flygt N-technology has a mechanically self-cleaning design that handles the toughest modern wastewater challenges.
Even with today’s increase in non-organic, fibrous solids, Flygt N-impellers prevent soft and hard clogging. Most solid objects entering the pump will pass through the impeller between the impeller vanes. If an object gets caught on the leading edge of one of the vanes, it will slide along the backswept shape toward the perimeter of the inlet and be guided out through the relief groove.
By preventing build-up on the impeller, Flygt N-technology is able to deliver sustained high efficiency, minimize pump operating hours, and reduce unplanned service calls. The self-cleaning design can easily handle a sludge concentration up to 8%.
N-Impeller Material Options
Flygt N-impellers are available in three material options to provide long-lasting operation in various wastewater media.
For typical wastewater applications with low amounts of corrosives, hardened grey iron impellers can be suitable. For abrasive and corrosive applications, Flygt’s Hard-Iron (60 HRC) impeller has demonstrated five times greater wear resistance compared to standard grey iron material. A duplex stainless steel impeller is available for applications requiring a high resistance to corrosion.
The accompanying impeller wear ring is available in both grey iron and Hard-Iron.
Flexible Design Options
The modular hydraulic design of the Flygt N 3153 series allows you to tailor the hydraulics to meet the requirements of a broad range of applications.
- Self-cleaning N-technology impeller in hardened grey iron, Hard-Iron or duplex stainless steel
- Replaceable wear ring in grey iron or Hard-Iron
- Chopper ring option for applications where cutting is required due to long fibers and solids
- Short shaft overhang, reducing shaft deflection and increasing seal and bearing life
- Motor designed for submersible use, with Class H insulation and heat losses concentrated around the stator core for improved cooling properties. Option to upgrade to IE3 comparable premium efficiency motor
- Cooling via internal closed-loop cooling system, direct cooling, or for warm-liquid applications, external cooling
- Flygt Plug-in seal with Active Seal system for greater sealing reliability and zero leakage to the motor. Available in Tungsten carbide (WCCR) or Silicone carbide (SiC) depending on pumped media
- Flygt Spin-out seal protection option to prevent seal wear caused by abrasive particles
- Inspection chamber and built-in sensor for early detection of potential fluid build-up between the bearing and seal
- SUBCAB® motor cable specially developed for submersible use cooling
Installation Configurations
Wet Pit (P)
Semi-permanent, submersible pump installation. Wet pit arrangement with the pump installed on twin guide bars with automatic connection to the discharge pipe.
Portable (S)
Portable, submersible pump installation. Portable pump with hose coupling or flange for connection to the discharge pipe.
Dry Installation Vertical (T)
Vertical, permanent, dry pump installation. The submersible pump is installed in a dry pit, with flange connection to suction and discharge piping.
Dry Installation Horizontal (Z)
Horizontal, permanent, dry pump installation. The submersible pump is installed in a dry pit, with flange connection to suction and discharge piping.
