Surface Pumps
End Suction Centrifugal Pumps
—  FPS ICC Series
—  FPS INH Series
—  FPS FNC Close-coupled Extended Shaft Electric Pumps
—  FPS FNS Stub Shaft Pumps
—  FPS FNE Bare Shaft Pumps
FNS stub shaft pump

FPS FNS Stub Shaft Pumps

Rigid-coupled design for reliable, efficient performance

The FNS stub shaft pumps are engineered for performance and easy integration with standardized motor systems. Each pump features a rigid coupling system, including a bracket, adapter, and a rigid coupling keyed to the motor shaft extension. This design ensures perfect alignment, reduces vibration, and minimizes maintenance over time.

Built in cast iron and compliant with EN 733 standards, FNS pumps are ideal for pumping clean, non-abrasive liquids in non-explosive environments. Thanks to their standardized connection with IEC motors, installation is fast and efficient. The FNS series is a reliable solution for industrial and civil applications, offering long service life, energy efficiency, and consistent hydraulic performance.

Applications

  • Water distribution
  • Water treatment
  • Irrigation systems
  • Industrial plants

Related Products

General features

Frequency: 50 Hz
Maximum liquid temperature: up to 90°C for domestic use
up to 120°C for industrial use
Range [m³/h]: 8 - 240
Max, head [m]: 100
Maximum operating pressure [bar]: PN10
Motor power range [kW]: 5,5 - 75
Motor type: Asynchronous squirrel-cage motor with external ventilation Motor protection for three-phase motors must be installed by the customer (it is recommended to use a equipment complying with current standards)
Motor standard voltage: 230/400V up to 4kW
400/690V from 5,5 kW
Efficiency Motor Class: IE3
Insulation class: F (B)
Protection Degree: IP55
Service factor: S1
Motor protection: PTC 155 °C probe as standard starting from 11 kW
Reference standard:

• ErP 547/2012 (MEI > 0,4)

• 640/2009 (Motors efficiency class IE3)

• UNI EN 733 (DIN 24255)
Materials Pump body / Motor bracket: Cast-iron GJL20 with anti-corrosive coating
Impeller: Cast-iron GJL20 with cataphoresis coating
Pump shaft: AISI 304
Mechanical seal: Ceramic / Graphite / NBR
Construction Suction / Delivery ports: according to standard EN1092-2

Mechanical seal specification

Model Type Position Temperature [° C]
Stationary part A Rotating part B Other components C Elastomers D
Standard version
VBP V B G P Ceramic Graphite AISI 316 NBR -10°C / +90°C
On request
QBE Q B G E Silicon carbide Graphite AISI 316 EPDM -20°C / +120°C
QBV Q B G V Silicon carbide Graphite AISI 316 FKM -20°C / +120°C
QUE Q U G E Silicon carbide Tungsten carbide AISI 316 EPDM -20°C / +120°C
QUV Q U G V Silicon carbide Tungsten carbide AISI 316 FKM -20°C / +120°C

FNS 32 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 9 12 15 18 21 24 27 30 33
l/min 0 150 200 250 300 350 400 450 500 550
GPM 0 39.6 52.8 66 79.3 92.5 105.7 118.9 132.1 145.3
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 32-200/055 5.5 7.5 51.5 50.5 49.5 48.5 47.5 45.5 43.5 41
FNS 32-200/075 7.5 10 60.5 60 59.5 58.5 57.5 56 54.5 52
FNS 32-250/092 9.2 12.5 74 74 73 72 70.5 68.5 66 63 59
FNS 32-250/110 11 15 87 87 87 87 86 85 83 80.5 77
FNS 32-250/150 15 20 97 97.5 97 97 96.5 96 94 91.5 86.5 78.5

FNS 40 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 12 15 18 21 24 27 30 33 36 39 42 45 48
l/min 0 200 250 300 350 400 450 500 550 600 650 700 750 800
GPM 0 52.8 66 79.3 92.5 105.7 118.9 132.1 145.3 158.5 171.7 184.9 198.1 211.3
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 40-200/055 5.5 7.5 44 44.5 44 43.5 43 42 41 39.5 37.5 35.5
FNS 40-200/075 7.5 10 53 53.5 53.5 53 52.5 52 51 49.5 48 46 43.5
FNS 40-250/110 11 15 72.5 72 71.5 71 70 69 68 66.5 65 63.5 61.5 59 57
FNS 40-250/150 15 20 85 86 86 85.5 85 84.5 84 82.5 81.5 80 78 76 73.5 70.5

FNS 50 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 18 21 24 27 30 33 36 39 42 45 48 57 60 66 72
l/min 0 300 350 400 450 500 550 600 650 700 750 800 950 1000 1100 1200
GPM 0 79.3 92.5 105.7 118.9 132.1 145.3 158.5 171.7 184.9 198.1 211.3 251 264.2 290.6 317
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 50-160/055 5.5 7.5 30 31.5 31 31 30.5 30 30 29.5 29 28 27.5 26.5 24 23 21 18.5
FNS 50-160/075 7.5 10 38 39 39 39 39 39 38.5 38.5 38 37.5 37 36 34 33 31 28
FNS 50-200/092 9.2 12.5 45.5 47 47 47 46.5 46 45.5 44.5 43.5 42.5 41 40 35 33 28 23
FNS 50-200/110 11 15 53 54.5 54.5 54 53.5 53 52.5 51.5 50.5 49.5 48 46.5 41.5 39.5 35.5 30.5
FNS 50-200/150 15 20 60 61.5 61.5 61 60.5 60 59.5 58.5 57.5 56 55 53.5 48.5 46.5 42 37.5
FNS 50-250/150 15 20 73 75 75 75 74.5 74.5 74 73.5 72.5 72 71 70 66.5 65
FNS 50-250/185 18.5 25 82 82.5 82.5 82.5 82 82 81.5 81 80.5 80 79 78 74.5 73 70 66
FNS 50-250/220 22 30 87.5 89 89 89 88.5 88.5 88 88 87.5 87 86 85.5 82 81 78 74

FNS 65 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 36 42 48 54 60 66 72 78 84 96 102 120 132 144 156
l/min 0 600 700 800 900 1000 1100 1200 1300 1400 1600 1700 2000 2200 2400 2600
GPM 0 158.5 184.9 211.3 237.8 264.2 290.6 317 343.4 369.8 422.7 449.1 528.3 581.2 634 686.9
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 65-125/055 5.5 7.5 24 24 23.5 23 23 22.5 22 21 20.5 19.5
FNS 65-125/075 7.5 10 25 25 25 25 25 24.5 24 23.5 22.5 22 20 18.5
FNS 65-160/092 9.2 12.5 32 33 33 33 33 32.5 32 31.5 31 30 28 27 22
FNS 65-160/110 11 15 37 39 39 39 39 38.5 38 37.5 36.5 36 34 32.5 28
FNS 65-160/150 15 20 42 45 45 45 45 44.5 44 44 43 42 40 39 35
FNS 65-200/150 15 20 42.5 48 48 48 48 48 47.5 47 47 46.5 45 44 41
FNS 65-200/185 18.5 25 47 50.5 50.5 50.5 50.5 50.5 50 50 49.5 49 47.5 46.5 43.5 41
FNS 65-200/220 22 30 50.5 54 54.5 54.5 54.5 54 54 53.5 53 52.5 51 50 47 44
FNS 65-250/300 30 40 71 73 73 73 73 73 72.5 72 72 71 70 69 66 63 59.5
FNS 65-250/370 37 50 80 82.5 82.5 82.5 82.5 82.5 82.5 82 81.5 81 80 79 76 73 70 66

FNS 80 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 60 66 72 78 84 96 102 120 132 144 156 168 180 192 240
l/min 0 1000 1100 1200 1300 1400 1600 1700 2000 2200 2400 2600 2800 3000 3200 4000
GPM 0 264.2 290.6 317 343.4 369.8 422.7 449.1 528.3 581.2 634 686.9 739.7 792.5 845.4 1056.7
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 80-160/110 11 15 27.5 28 28 28 27.5 27.5 27 26.5 25.5 24.5 23 21.5
FNS 80-160/150 15 20 32 33 33 33 33 33 32.5 32 31 29.5 28 26.5
FNS 80-160/185 18.5 25 33 34.5 34.5 34.5 34.5 34 34 33.5 32 31 29.5 28 25.5 23
FNS 80-160/220 22 30 37 39 39 39 38.5 38.5 38 38 36.5 35.5 34 32.5 30.5 28
FNS 80-200/300 30 40 51 56.5 56.5 56.6 56.6 56.5 56.5 56 55 54 52.5 50.5 48.5 46.5
FNS 80-200/370 37 50 61 66 66 66.5 66.5 66.5 66.5 66.5 65.5 65 64 62.5 51 59.5
FNS 80-250/450 45 60 68 70.5 70.5 70.5 70.5 70.5 70 70 69.5 68.5 67.5 66.5 65 63 61 50
FNS 80-250/550 55 75 87 89 89 89.5 89.5 89.5 88 88 87 86 85 84 82.5 81 79 70.5
FNS 80-250/750 75 100 101 103.5 104 104 104 104 104 104.5 104 104 103.5 103 102 101 100 92

FNS 32 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 9 12 15 18 21 24 27 30 33
l/min 0 150 200 250 300 350 400 450 500 550
GPM 0 39.6 52.8 66 79.3 92.5 105.7 118.9 132.1 145.3
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 32-200/055 5.5 7.5 51.5 50.5 49.5 48.5 47.5 45.5 43.5 41
FNS 32-200/075 7.5 10 60.5 60 59.5 58.5 57.5 56 54.5 52
FNS 32-250/092 9.2 12.5 74 74 73 72 70.5 68.5 66 63 59
FNS 32-250/110 11 15 87 87 87 87 86 85 83 80.5 77
FNS 32-250/150 15 20 97 97.5 97 97 96.5 96 94 91.5 86.5 78.5

FNS 40 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 12 15 18 21 24 27 30 33 36 39 42 45 48
l/min 0 200 250 300 350 400 450 500 550 600 650 700 750 800
GPM 0 52.8 66 79.3 92.5 105.7 118.9 132.1 145.3 158.5 171.7 184.9 198.1 211.3
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 40-200/055 5.5 7.5 44 44.5 44 43.5 43 42 41 39.5 37.5 35.5
FNS 40-200/075 7.5 10 53 53.5 53.5 53 52.5 52 51 49.5 48 46 43.5
FNS 40-250/110 11 15 72.5 72 71.5 71 70 69 68 66.5 65 63.5 61.5 59 57
FNS 40-250/150 15 20 85 86 86 85.5 85 84.5 84 82.5 81.5 80 78 76 73.5 70.5

FNS 50 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 18 21 24 27 30 33 36 39 42 45 48 57 60 66 72
l/min 0 300 350 400 450 500 550 600 650 700 750 800 950 1000 1100 1200
GPM 0 79.3 92.5 105.7 118.9 132.1 145.3 158.5 171.7 184.9 198.1 211.3 251 264.2 290.6 317
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 50-160/055 5.5 7.5 30 31.5 31 31 30.5 30 30 29.5 29 28 27.5 26.5 24 23 21 18.5
FNS 50-160/075 7.5 10 38 39 39 39 39 39 38.5 38.5 38 37.5 37 36 34 33 31 28
FNS 50-200/092 9.2 12.5 45.5 47 47 47 46.5 46 45.5 44.5 43.5 42.5 41 40 35 33 28 23
FNS 50-200/110 11 15 53 54.5 54.5 54 53.5 53 52.5 51.5 50.5 49.5 48 46.5 41.5 39.5 35.5 30.5
FNS 50-200/150 15 20 60 61.5 61.5 61 60.5 60 59.5 58.5 57.5 56 55 53.5 48.5 46.5 42 37.5
FNS 50-250/150 15 20 73 75 75 75 74.5 74.5 74 73.5 72.5 72 71 70 66.5 65
FNS 50-250/185 18.5 25 82 82.5 82.5 82.5 82 82 81.5 81 80.5 80 79 78 74.5 73 70 66
FNS 50-250/220 22 30 87.5 89 89 89 88.5 88.5 88 88 87.5 87 86 85.5 82 81 78 74

FNS 65 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 36 42 48 54 60 66 72 78 84 96 102 120 132 144 156
l/min 0 600 700 800 900 1000 1100 1200 1300 1400 1600 1700 2000 2200 2400 2600
GPM 0 158.5 184.9 211.3 237.8 264.2 290.6 317 343.4 369.8 422.7 449.1 528.3 581.2 634 686.9
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 65-125/055 5.5 7.5 24 24 23.5 23 23 22.5 22 21 20.5 19.5
FNS 65-125/075 7.5 10 25 25 25 25 25 24.5 24 23.5 22.5 22 20 18.5
FNS 65-160/092 9.2 12.5 32 33 33 33 33 32.5 32 31.5 31 30 28 27 22
FNS 65-160/110 11 15 37 39 39 39 39 38.5 38 37.5 36.5 36 34 32.5 28
FNS 65-160/150 15 20 42 45 45 45 45 44.5 44 44 43 42 40 39 35
FNS 65-200/150 15 20 42.5 48 48 48 48 48 47.5 47 47 46.5 45 44 41
FNS 65-200/185 18.5 25 47 50.5 50.5 50.5 50.5 50.5 50 50 49.5 49 47.5 46.5 43.5 41
FNS 65-200/220 22 30 50.5 54 54.5 54.5 54.5 54 54 53.5 53 52.5 51 50 47 44
FNS 65-250/300 30 40 71 73 73 73 73 73 72.5 72 72 71 70 69 66 63 59.5
FNS 65-250/370 37 50 80 82.5 82.5 82.5 82.5 82.5 82.5 82 81.5 81 80 79 76 73 70 66

FNS 80 – 50 Hz

Electric pump model RATED POWER Q = DELIVERY
m3/h 0 60 66 72 78 84 96 102 120 132 144 156 168 180 192 240
l/min 0 1000 1100 1200 1300 1400 1600 1700 2000 2200 2400 2600 2800 3000 3200 4000
GPM 0 264.2 290.6 317 343.4 369.8 422.7 449.1 528.3 581.2 634 686.9 739.7 792.5 845.4 1056.7
Three-phase version [kW] [HP] H = TOTAL METERS HEAD OF WATER COLUMN [m]
FNS 80-160/110 11 15 27.5 28 28 28 27.5 27.5 27 26.5 25.5 24.5 23 21.5
FNS 80-160/150 15 20 32 33 33 33 33 33 32.5 32 31 29.5 28 26.5
FNS 80-160/185 18.5 25 33 34.5 34.5 34.5 34.5 34 34 33.5 32 31 29.5 28 25.5 23
FNS 80-160/220 22 30 37 39 39 39 38.5 38.5 38 38 36.5 35.5 34 32.5 30.5 28
FNS 80-200/300 30 40 51 56.5 56.5 56.6 56.6 56.5 56.5 56 55 54 52.5 50.5 48.5 46.5
FNS 80-200/370 37 50 61 66 66 66.5 66.5 66.5 66.5 66.5 65.5 65 64 62.5 51 59.5
FNS 80-250/450 45 60 68 70.5 70.5 70.5 70.5 70.5 70 70 69.5 68.5 67.5 66.5 65 63 61 50
FNS 80-250/550 55 75 87 89 89 89.5 89.5 89.5 88 88 87 86 85 84 82.5 81 79 70.5
FNS 80-250/750 75 100 101 103.5 104 104 104 104 104 104.5 104 104 103.5 103 102 101 100 92

Catalogs & Brochures

Manuals