Flygt N 3127 | Small Capacity Wastewater Pumps

Overview

Product Features

Flows up to 350 m3/h
Heads up to 42 m
Power ratings 4.7 - 7.4 kW
Discharge connection sizes 80 - 150 mm
Pump weights 147 - 160 kg

Designed for low-to-medium flow rates, the Flygt N 3127 pump series, featuring the well-proven Adaptive N^® hydraulic technology, is designed to deliver sustained high efficiency and clog-free performance for demanding wastewater applications.

The series is available in standard and explosion-proof versions, as well as impeller material options of Hard-Iron or grey iron to ensure best-in-class media handling capabilities.

For added flexibility, the Flygt N 3127 can be delivered for wet or dry, vertical or horizontal installation, including column pipe installation (configurations L, P, S, T, Z, X).

Non-Clog Adaptive N Impeller

Flygt N-technology wastewater pumps take on the toughest applications and get the job done. Thanks to the self-cleaning Adaptive N impeller, Flygt small range N-pumps deliver clog-free performance and sustained high efficiency. Lower energy consumption and less unplanned maintenance adds up to total peace of mind – and big savings over the long term.

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 towards the perimeter of the inlet and be guided out through the relief groove.

When larger objects enter the pump, the Adaptive N technology allows the impeller to lift and let the objects through.

Due to the mechanical self-cleaning design, a sludge concentration up to 8% can easily be pumped.

Impeller Materials for Today’s Wastewater Media

The Flygt Adaptive N impeller is available in two material options to meet the requirements of a broad range of wastewater pumping needs.

Hardened grey iron impellers are suitable for typical wastewater applications, while our Hard-Iron (60 HRC) impeller provides superior wear resistance for abrasive and corrosive applications.

The replaceable wear ring is available in grey iron or Hard-Iron to meet different operating conditions.

Trouble-Free Pumping for The Long-Term

The Flygt N 3127 series provides reliable, trouble-free operation in municipal sewage and commercial applications. It features:

Adaptive N hydraulic technology for non-clog performance and sustained high efficiency
Chopper ring option for tough wastewater applications where cutting is required due to long fibers and solids
Short shaft overhang for reduced shaft deflection and longer seal and bearing life
Motor designed for submersible use, with heat losses concentrated around the stator core for improved cooling properties
Double mechanical seal system consisting of two sets of mechanical shaft seals that work independently to provide double security. Available in Tungsten carbide (WCCR) or Silicone carbide (SiC) depending on pumped media
Griploc system that secures the seals to the shaft with no rubber friction, no grub screws and no shaft damage
SUBCAB^® motor cable specially developed for submersible use

Installation Configurations

Column Pipe (L)

Semi-permanent, wet well column pipe installation. The well is divided into suction and discharge portions.

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.

Drilled Flange (X)

The pump has no pre-determined mechanical connection. The outlet flange is drilled.

Specifications

50 hz

60 hz

Metric

Pump	N 3127 HT 3 phase 4 poles 50hz US	N 3127 HT 3 phase Adaptive 4 poles 50hz US	N 3127 HT 3 phase Adaptive 4 poles SmartRun 50hz US	N 3127 HT 3 phase 4 poles SmartRun 50hz US	N 3127 LT 3 phase 4 poles 50hz US	N 3127 LT 3 phase Adaptive 4 poles 50hz US	N 3127 LT 3 phase 4 poles SmartRun 50hz US	N 3127 LT 3 phase Adaptive 4 poles SmartRun 50hz US	N 3127 MT 3 phase 4 poles 50hz US	N 3127 MT 3 phase Adaptive 4 poles 50hz US	N 3127 MT 3 phase 4 poles SmartRun 50hz US	N 3127 MT 3 phase Adaptive 4 poles SmartRun 50hz US	N 3127 SH 3 phase 2 poles 50hz US	N 3127 SH 3 phase Adaptive 2 poles 50hz US	N 3127 SH 3 phase Adaptive 2 poles SmartRun 50hz US	N 3127 SH 3 phase 2 poles SmartRun 50hz US
Frequency	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz
Number of poles	4	4	4	4	4	4	4	4	4	4	4	4	2	2	2	2
Phase	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~
Discharge outlet diameter	3 15/16 inch	3 15/16 inch	3 15/16 inch	3 15/16 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	3 15/16 inch	3 15/16 inch	3 15/16 inch	3 15/16 inch	3 1/8 inch	3 1/8 inch	3 1/8 inch	3 1/8 inch
Rated power	6.3 hp - 7.9 hp	6.3 hp - 7.9 hp	7.9 hp	6.3 hp	6.3 hp - 7.9 hp	6.3 hp - 7.9 hp	6.3 hp	7.9 hp	6.3 hp - 7.9 hp	6.3 hp - 7.9 hp	6.3 hp	7.9 hp	9.9 hp	9.9 hp	9.9 hp	9.9 hp
Rated currents @400V	9.6 A - 13 A	10 A - 13 A	13 A	9.6 A	9.6 A - 13 A	10 A - 13 A	9.6 A	13 A	9.6 A - 13 A	10 A - 13 A	9.6 A	13 A	14 A	16 A	16 A	14 A
Impeller material	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron
Motor efficiency class	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)

Pump	N 3127 HT 3 phase 4 poles 50hz Metric	N 3127 HT 3 phase Adaptive 4 poles 50hz Metric	N 3127 HT 3 phase 4 poles SmartRun 50hz Metric	N 3127 HT 3 phase Adaptive 4 poles SmartRun 50hz Metric	N 3127 LT 3 phase 4 poles 50hz Metric	N 3127 LT 3 phase Adaptive 4 poles 50hz Metric	N 3127 LT 3 phase 4 poles SmartRun 50hz Metric	N 3127 LT 3 phase Adaptive 4 poles SmartRun 50hz Metric	N 3127 MT 3 phase 4 poles 50hz Metric	N 3127 MT 3 phase Adaptive 4 poles 50hz Metric	N 3127 MT 3 phase 4 poles SmartRun 50hz Metric	N 3127 MT 3 phase Adaptive 4 poles SmartRun 50hz Metric	N 3127 SH 3 phase 2 poles 50hz Metric	N 3127 SH 3 phase Adaptive 2 poles 50hz Metric	N 3127 SH 3 phase 2 poles SmartRun 50hz Metric	N 3127 SH 3 phase Adaptive 2 poles SmartRun 50hz Metric
Frequency	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz	50 hz
Number of poles	4	4	4	4	4	4	4	4	4	4	4	4	2	2	2	2
Phase	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~	3~
Discharge outlet diameter	100 mm	100 mm	100 mm	100 mm	150 mm	150 mm	150 mm	150 mm	100 mm	100 mm	100 mm	100 mm	80 mm	80 mm	80 mm	80 mm
Rated power	4.7 kW - 5.9 kW	4.7 kW - 5.9 kW	4.7 kW	5.9 kW	4.7 kW - 5.9 kW	4.7 kW - 5.9 kW	4.7 kW	5.9 kW	4.7 kW - 5.9 kW	4.7 kW - 5.9 kW	4.7 kW	5.9 kW	7.4 kW	7.4 kW	7.4 kW	7.4 kW
Rated currents @400V	9.6 A - 13 A	10 A - 13 A	9.6 A	13 A	9.6 A - 13 A	10 A - 13 A	9.6 A	13 A	9.6 A - 13 A	10 A - 13 A	9.6 A	13 A	14 A	16 A	14 A	16 A
Impeller material	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron
Motor efficiency class	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)

Pump	N 3127 HT 1 phase 4 poles 60hz US	N 3127 HT 1 phase Adaptive 4 poles 60hz US	N 3127 HT 3 phase 4 poles 60hz US	N 3127 HT 3 phase Adaptive 4 poles 60hz US	N 3127 HT 3 phase 4 poles SmartRun 60hz US	N 3127 HT 3 phase Adaptive 4 poles SmartRun 60hz US	N 3127 LT 1 phase 4 poles 60hz US	N 3127 LT 1 phase Adaptive 4 poles 60hz US	N 3127 LT 3 phase 4 poles 60hz US	N 3127 LT 3 phase Adaptive 4 poles 60hz US	N 3127 LT 3 phase 4 poles SmartRun 60hz US	N 3127 LT 3 phase Adaptive 4 poles SmartRun 60hz US	N 3127 MT 1 phase 4 poles 60hz US	N 3127 MT 1 phase Adaptive 4 poles 60hz US	N 3127 MT 3 phase 4 poles 60hz US	N 3127 MT 3 phase Adaptive 4 poles 60hz US	N 3127 MT 3 phase 4 poles SmartRun 60hz US	N 3127 MT 3 phase Adaptive 4 poles SmartRun 60hz US	N 3127 SH 3 phase 2 poles 60hz US	N 3127 SH 3 phase Adaptive 2 poles 60hz US	N 3127 SH 3 phase 2 poles SmartRun 60hz US	N 3127 SH 3 phase Adaptive 2 poles SmartRun 60hz US
Frequency	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz
Number of poles	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	2	2	2	2
Phase	1~	1~	3~	3~	3~	3~	1~	1~	3~	3~	3~	3~	1~	1~	3~	3~	3~	3~	3~	3~	3~	3~
Discharge outlet diameter	3 15/16 inch	3 15/16 inch	3 15/16 inch	3 15/16 inch	3 15/16 inch	3 15/16 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	5 7/8 inch	3 15/16 inch	5 7/8 inch	3 15/16 inch	5 7/8 inch	3 1/8 inch	3 1/8 inch	3 1/8 inch	3 1/8 inch
Rated power	7.5 hp	7.5 hp	7.5 hp - 10 hp	7.5 hp - 10 hp	10 hp	10 hp	7.5 hp	7.5 hp	7.5 hp - 10 hp	7.5 hp - 10 hp	10 hp	10 hp	7.5 hp	7.5 hp	7.5 hp - 10 hp	7.5 hp - 10 hp	7.5 hp	10 hp	11 hp	11 hp	11 hp	11 hp
Rated currents @400V	32 A	32 A	14 A - 25 A	11 A - 25 A	14 A	15 A	32 A	32 A	14 A - 25 A	11 A - 25 A	14 A	15 A	32 A	32 A	14 A - 25 A	11 A - 25 A	19 A	15 A	26 A	15 A	26 A	15 A
Impeller material	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron
Motor efficiency class	Standard	Standard	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard	Standard	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard	Standard	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)

Pump	N 3127 HT 1 phase 4 poles 60hz Metric	N 3127 HT 1 phase Adaptive 4 poles 60hz Metric	N 3127 HT 3 phase 4 poles 60hz Metric	N 3127 HT 3 phase Adaptive 4 poles 60hz Metric	N 3127 HT 3 phase 4 poles SmartRun 60hz Metric	N 3127 HT 3 phase Adaptive 4 poles SmartRun 60hz Metric	N 3127 LT 1 phase 4 poles 60hz Metric	N 3127 LT 1 phase Adaptive 4 poles 60hz Metric	N 3127 LT 3 phase 4 poles 60hz Metric	N 3127 LT 3 phase Adaptive 4 poles 60hz Metric	N 3127 LT 3 phase 4 poles SmartRun 60hz Metric	N 3127 LT 3 phase Adaptive 4 poles SmartRun 60hz Metric	N 3127 MT 1 phase 4 poles 60hz Metric	N 3127 MT 1 phase Adaptive 4 poles 60hz Metric	N 3127 MT 3 phase 4 poles 60hz Metric	N 3127 MT 3 phase Adaptive 4 poles 60hz Metric	N 3127 MT 3 phase 4 poles SmartRun 60hz Metric	N 3127 MT 3 phase Adaptive 4 poles SmartRun 60hz Metric	N 3127 SH 3 phase 2 poles 60hz Metric	N 3127 SH 3 phase Adaptive 2 poles 60hz Metric	N 3127 SH 3 phase 2 poles SmartRun 60hz Metric	N 3127 SH 3 phase Adaptive 2 poles SmartRun 60hz Metric
Frequency	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz	60 hz
Number of poles	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	4	2	2	2	2
Phase	1~	1~	3~	3~	3~	3~	1~	1~	3~	3~	3~	3~	1~	1~	3~	3~	3~	3~	3~	3~	3~	3~
Discharge outlet diameter	100 mm	100 mm	100 mm	100 mm	100 mm	100 mm	150 mm	150 mm	150 mm	150 mm	150 mm	150 mm	150 mm	150 mm	100 mm	150 mm	100 mm	150 mm	80 mm	80 mm	80 mm	80 mm
Rated power	5.6 kW	5.6 kW	5.6 kW - 7.5 kW	5.6 kW - 7.5 kW	7.5 kW	7.5 kW	5.6 kW	5.6 kW	5.6 kW - 7.5 kW	5.6 kW - 7.5 kW	7.5 kW	7.5 kW	5.6 kW	5.6 kW	5.6 kW - 7.5 kW	5.6 kW - 7.5 kW	5.6 kW	7.5 kW	8.2 kW	8.2 kW	8.2 kW	8.2 kW
Rated currents @400V	32 A	32 A	14 A - 19 A	15 A - 19 A	14 A	15 A	32 A	32 A	14 A - 19 A	15 A - 19 A	14 A	15 A	32 A	32 A	14 A - 19 A	15 A - 19 A	19 A	15 A	26 A	15 A	26 A	15 A
Impeller material	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron	Grey cast iron or Hard-Iron
Motor efficiency class	Standard	Standard	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard	Standard	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard	Standard	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)	Standard, Premium efficiency (IE3)

Accessories

Access Cover

Heavy-duty access cover
Suitable for pump stations located under roads
Made of ductile iron

Competitor Adaptors

Flygt Connect adaptors are used for retrofitting Flygt submersible pumps in stations with pumps from other suppliers.
Flygt submersible pumps with self-cleaning N-technology give sustained high efficiency, bringing a low overall energy cost while also minimizing service calls.
Flygt pumps can replace pumps in most pump stations. Just fit the original sliding bracket on the Flygt pump.

Dry pump installation, horizontal

Good maintenance access to pump suction side with patented service openings
Flygt Z lifting equipment simplifies service
Service cart and rails for easy access to the drive unit and impeller

TOP sump bottom with discharge connection and guide system

Flygt TOP patented geometry for a clean sump
Sediments are cleared by water turbulence
Discharge connection with MULTI-JOINT^® pipe connection
Twin guide bars ensure correct pump position
Automatic pump hook-up to the discharge pipe

Flush Valve

Automatic sump cleaning
Minimizes unscheduled maintenance calls
Works without power supply or control system
The Flygt 3000 series is ready for flush valve installation

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Flygt N-Technology Pumps Flygt N 3127

Available for Rent

Overview

Non-Clog Adaptive N Impeller

Impeller Materials for Today’s Wastewater Media

Trouble-Free Pumping for The Long-Term

Installation Configurations

Column Pipe (L)

Wet Pit (P)

Portable (S)

Dry Installation Vertical (T)

Dry Installation Horizontal (Z)

Drilled Flange (X)

Specifications

Accessories

Accessories

Access Cover

Competitor Adaptors

Dry pump installation, horizontal

TOP sump bottom with discharge connection and guide system

Flush Valve

Solutions

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