GRUNDFOS WASTEWATER

SRP range 3.0 – 24 kW60 Hz version

Grundfos Submersible Recirculation Pumps

A range of efficient and reliable submersible recirculation pumps for wastewater treatment plants

>�

Soluti ons for a variety of applications Wastewater treatment plants, pumping return

sludge

Flood control and other applications which require large flows at low heads

Main features Oil-filled gearbox with tapered oil bearings

Rewindable motor

Two radial lip seals protecting the shaft seal

No special tools needed for maintenance or service

Built-in leak sensor

Motor housing in cast iron, protected by a multi-layer two-component epoxy coating

Pumping rack and hydraulic inlet in stainless steel

Propeller in cast stainless steel

Grundfos offers a range of dependable and highly efficient submersible recirculation pumps for wastewater treatment and flood control.

The recirculation pumps are designed for years of continuous use in the toughest environments. The pumps are based on the same modular design and principles as the gear-driven Grundfos mixers and flowmakers, which ensures easier maintenance and service. All parts are manufactured from specially selected materials, and each component is thoroughly tested for reliability and durability before assembly.

The Grundfos range of submersible recirculation pumps is based on planetary-gear driven impellers. The stainless steel hydraulic parts are designed for high efficiency under both light and heavy-duty operating conditions.

The submersible recirculation pumps are available in the following dimensions: DN 300, DN 500 and DN 800 mm with a motor range from 3.0 to 24 kW. This provides the possibility of a capacity of up to 5,130 m3/h and a head up to 2.1 metre.

Details >�

State-of-the-art features and design

Motor bracketCorrosion resistant motor bracket made from stain-less steel, galvanically separated from the motor housing. The motor bracket ensures easy installation and stable operation.

Active electronic leak detectorIndicates possible liq-uid in the gear hous-ing. Even the smallest quantity will be quickly detected. Thus service can be carried out before any damage is done.

ImpellerHydro-dynamic 3-blade impeller made from cast stainless steel.

Two ball bearingsThe rotor shaft rests on two ball bearings, which accommodate both axial and radial forces.

Cable Watertight cable entry with self-shaping seal preventing cable damage.

Motor protectionThe motor is effectively protected against over-load and overheating by three thermal switches or three thermistors placed in each motor winding.

Shaft sealing ringsThe radial shaft sealing rings protect the mecha-nical shaft seal system from abrasive parts. During maintenance, only the less expensive radial shaft sealing rings need to be changed.

Planetary gearThe best and most efficient solution to trans-port axial forces. Slim design provides optimum hydrodynamic shape.

Material specifications and type key

Technical data >�

Material specifications

Corrosion protectionIn order to ensure long and trouble-free operation of the SRP pumps, the cast-iron parts are protected against corrosion with a high-grade epoxy anti-corrosion system. Minimum thickness 320 µ.

Type key

Component Material DIN W.-Nr./EN standard

Bottom fixation Column profile tubeTop fixationConnection flange PN 10 �/� Relief wire Stainless steel 1.��0� �1�LCrane w/winch Aluminium - -Pump rack Stainless steel 1.��01 �0�Motor housing Gear housingHydraulic inlet Stainless steel 1.��01 �0�Impeller Stainless steel 1.���1 -

AISI/ASTM

Stainless steel 1.��01 �0�

Cast iron EN-JL10�0 -

Example SRP .70 .30 .805 .25

Type range SRP, Submersible Recirculation Pump

PN powder output, P2 [kW] x 10

Nominal impeller diameter [cm]

Impeller speed [min-1]

Blade angle [˚]

( ) = standardE = explosion proof

Technical data

Technical data >�

Technical data

Electrical data

SRP.30.30.513.25 3.0 3.5 A07RN-F12G1.5 S1. ∆ 513 6.1 0.88 45 300 96576880

SRP.40.30.607.25 4.0 4.8 A07RN-F12G1.5 2 S1. ∆ 607 8.3 0.90 45 300 25 96576883

SRP.55.30.722.25 5.5 6.5 A07RN-F12G1.5 S1. ∆ 722 11.8 0.84 109 300 96576884

SRP.70.30.805.25 7.0 8.1 A07RN-F12G1.5 S1. ∆ 805 14.3 0.89 109 300 96576886

SRP.35.50.254.27 3.5 4.2 A07RN-F12G1.5 S1. ∆ 254 8.4 0.77 48.3 500 96576887

SRP.50.50.299.27 5.0 6.1 A07RN-F12G1.5 S1. ∆ 299 11.1 0.85 48.3 500 27 96576888

SRP.70.50.363.27 7.0 8.0 A07RN-F12G2.5 S1. ∆ 363 15.9 0.78 153 500 96576889

SRP.100.50.406.27 10.0 11.2 380 A07RN-F12G2.5 S1. ∆ 406 21.0 0.82 203 3 500 96576890

SRP.70.80.260.11 7.0 8.0 A07RN-F12G2.5 S1. ∆ 260 15.9 0.78 153 800 96576891

SRP.120.80.308.11 12.0 13.5 A07RN-F12G2.5 4 S1. ∆ 308 24.0 0.86 203 800 96576892

SRP.150.80.334.11 15.0 16.9 A07RN7G4+4x1 S1. ∆ 334 31.0 0.85 282 800 96576893

SRP.130.80.355.11 13.0 14.6 A07RN-F12G2.5 S1. ∆ 355 25.7 0.87 203 800 11 96576894

SRP.200.80.374.11 20.0 22.2 A07RN7G4+4x1 S1. ∆ 374 42.0 0.82 335 800 96576895

SRP.180.80.381.11 18.0 20.0 A07RN7G4+4x1 S1. ∆ 381 35.0 0.88 282 800 96576896

SRP.240.80.418.11 24.0 26.7 A07RN7G4+4x1 S1. ∆ 418 49.0 0.84 335 800 96576897

SRP.180.80.422.11 18.0 20.0 A07RN7G4+4x1 S1. ∆ 422 35.0 0.88 282 800 96576898

Pum

p t

ype

Pow

er o

utp

ut

P 2 [kW

]

Pow

er in

pu

t P 1 [

kW]

Rat

ed v

olta

ge

Cab

le t

ype

Nu

mb

er o

f p

oles

Op

erat

ing

mod

e

Imp

elle

r R

PM

IN [A

]

Star

tin

g cu

rren

t [A

]

Bla

des

Nom

. im

pel

ler

diam

eter

Bla

de a

ngl

e

Pro

duct

nu

mb

er

Mains voltage � x ��0 VVoltage tolerance [%] +�/–10Mains frequency required [Hz] �0Thermal sensor type PTC or PTOThermal switch cut-out temperature [˚C] 1�0 or 1�0Enclosure class IP ��Insulation class FMax. installation depth [m] �0Max. liquid temperature [˚C] �0Max. number of starts per hour �0Cable length [m] 10

Performance overview

Technical data >�

Performance overview

0 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 Q [l/s]

0.0

0.2

0.4

0.6

0.8

1.0

1.2

1.4

1.6

1.8

2.0

2.2

H[m]

0 500 1000 1500 2000 2500 3000 3500 4000 4500 5000 Q [m³/h]

SRP60 Hz

SRP.XXX.80.XXX.11SRP.XX.50.XXX.27

SRP.XX.30.XXX.25

SRP.XX.30.XXX.25

Technical data >�

Performance overview

80 100 120 140 160 180 200 220 240 260 280 Q [l/s]

0. 0

0. 2

0. 4

0. 6

0. 8

1. 0

1. 2

1. 4

1. 6

1. 8

H[m]

300 400 500 600 700 800 900 1000 Q [m³/h]

SRP.XX.30.XXX.2560 Hz

70.30.805

55.30.722

40.30.607

30.30.513

80 100 120 140 160 180 200 220 240 260 280 Q [l/s]

0

1

2

3

4

5

6

7

P2[kW]

70.30.805

55.30.722

40.30.607

30.30.513

SRP.30.30.513.25 3.0 96576880SRP.40.30.607.25 4.0 380 96556883SRP.55.30.722.25 5.5 96576884SRP.70.30.805.25 7.0 96576886

Productnumber

P2 [kW]

Permissible motor voltage [V]

Productdesignation

SRP.XX.50.XXX.27

Technical data >�

Performance overview

150 200 250 300 350 400 450 500 550 600 650 700 Q [l/s]

0. 0

0. 2

0. 4

0. 6

0. 8

1. 0

1. 2

1. 4

H[m]

800 1200 1600 2000 2400 Q [m³/h]

SRP.XX.50.XXX.2760 Hz

100.50.406

70.50.363

50.50.299

35.50.254

150 200 250 300 350 400 450 500 550 600 650 700 Q [l/s]

0

1

2

3

4

5

6

7

8

9

10

P2[kW]

100.50.406

70.50.363

50.50.299

35.50.254

SRP.35.50.254.27 3.5 96576887SRP.50.50.299.27 5.0 380 96576888SRP.70.50.363.27 7.0 96576889SRP.100.50.406.27 10.0 96576890

Productnumber

P2 [kW]

Permissible motor voltage [V]

Productdesignation

SRP.XX.80.XXX.11

Technical data >�

Performance overview

200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 Q [l/s]

0. 0

0. 2

0. 4

0. 6

0. 8

1. 0

1. 2

1. 4

1. 6

1. 8

2. 0

2. 2

H[m]

1000 1500 2000 2500 3000 3500 4000 4500 5000 Q [m³/h]

SRP.XXX.80.XXX.11

60 Hz

180.80.422

240.80.418

180.80.381

200.80.374

130.80.355

150.80.334

120.80.308

70.80.260

200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 Q [l/s]

0

2

4

6

8

10

12

14

16

18

20

22

24

P2[kW]

180.80.422

240.80.418

180.80.381

200.80.374

130.80.355

150.80.334

120.80.308

70.80.260

SRP.70.80.260.11 7.0 96576891SRP.120.80.308.11 12.0 96576892SRP.150.80.334.11 15.0 96576893SRP.130.80.355.11 13.0 380 96576894SRP.200.80.374.11 20.0 96576895SRP.180.80.381.11 18.0 96576896SRP.240.80.418.11 24.0 96576897SRP.180.80.422.11 18.0 96576898

Productnumber

P2 [kW]

Permissible motor voltage [V]

Productdesignation

>10

Selection guide

Technical data >11

Head loss calculationPump selection is based on determination of flow and head.

The data needed in order to select the SRP with the right specifications are:Required flow, Q – and total head, H.

Calculation of headH = Hgeo + Hsystem, where Hgeo is the geodetic head (Hgeo = H2 - H1) and Hsystem is Head Loss in the system:Hsystem = Hj + Hjn + Hvalve

Hj = Loss in pipe. Hj = x

Hjn = Outlet loss. Hjn = Loss in elbows. Typical value 0.1 – 0.2 m

Hvalve = Loss in valve. Typical value 0.05 – 0.25. Actual data from supplier shall be used.

For more specific calculation please contact Grundfos.

Symbols = Typical value 0.02L = Pipe length [m]V = Velocity [m/sec]D = Pipe diameter [m]g = Gravity 9.81

Example:Q = 475 l/sec

Hgeo = 0.3 m

L = 21 m

V = 2.4 m/sec

D = 0.5 m

There are no valves or elbows in the system.

Calculation of loss in pipe

Hj = 0.02 x = 0.25 m

Calculation of outlet loss

Hjn = = 0.30 m

Determination of Head

H = 0.3 m + 0.25 m + 0.3 m = 0.85 m

By the use of selection curves for SRP.XX.50.XXX.27 (page 8) it can be determined that the SRP.70.50.357.27 meets the requirements and will deliver Q = 475 l/sec at H = 0.85 m.

V2

2g

L x V2

D x 2g( )

2.42

2 x 9.81

21 x 2.42

0.5 x 2 x 9.81()

y

y

SRP installation

Technical data >1�

Installation depth Installation depth

SRP.xx.30.xxx.25 and SRP.xx.50.xxx.27

SRP.xx.30.xxx.25 450 300 300SRP.xx.50.xxx.27 750 500 500SRP.xx.80.xxx.11 1200 800 800

Distance (D) between two pumps D 2 x Dimpeller

Pump type Habove [mm]

HminHabovew/

Vortex shield [mm]

Accessories

Accessories > 1�

Note: For other cable or wire lengths, please contact your local Grundfos company.

SRP.xx.30.xxSRP.xx.50.xxSRP.xx.80.xxAll SRP order no. of metres wanted

1.4301 304 96564825

1.4301 304 96585482

1.4301 304 96489420

96489569

Pos Description Column size Material DIN W.-Nr. AISI Product numberType

Bottom fixation

Column profile tube

1

2

60/60 Stainless steel

60/60 Stainless steel

SRP.xx.30.xxSRP.xx.50.xxSRP.xx.80.xx

1.4301 304 96489522

1.4301 304 96564824Top fixation 3 60/60 Stainless steel

DN 300DN 500DN 800All SRP

965648261.4301 304 96564827

965648281.4404 316L 96494548

96494352

96494354

ConnectionFlangePN 10 2/3Relief wire (length 6 m)

4

5

Stainless steel

965648321.4301 304 96564833

96564834 Stainless steel

Stainless steel

1.4404 316L Stainless steel

SRP.xx.30.xxSRP.xx.50.xxSRP.xx.80.xx

SRP.xx.30.xxSRP.xx.50.xxSRP.xx.80.xx

SRP.30.30.xx -SRP.50.50.xxSRP.65.50.xx -SRP.240.80.xx

96489566

1.4301 304 96564794

Crane w/winch incl. 10 m wire

Cable clamp

Vortex shield

Relay for leak sensor ALR-20/A

6

7

Aluminium

Stainless steel

Technical data >1�

Dimensions

Dimensional drawing

Dimensions and weight

SRP.30.30.513.25 3.0 848 602 736 571 66 445 220 15 110SRP.40.30.607.25 4.0 848 602 736 571 66 445 220 15 110SRP.55.30.722.25 5.5 848 602 736 571 66 445 220 15 120SRP.70.30.805.25 7.0 848 602 736 571 66 445 220 25 120SRP.35.50.254.27 3.5 910 835 787 824 66 670 230 25 200SRP.50.50.299.27 5.0 910 835 787 824 66 670 230 25 200SRP.70.50.363.27 7.0 1119 855 996 1225 66 670 230 25 240SRP.100.50.406.27 10.0 1119 855 996 1225 66 670 230 25 250SRP.70.80.260.11 7.0 1129 1237 1006 1225 66 1015 267 25 350SRP.120.80.308.11 12.0 1129 1237 1006 1225 66 1015 267 25 360SRP.150.80.334.11 15.0 1181 1257 1058 1225 66 1015 267 25 405SRP.130.80.355.11 13.0 1129 1237 1006 1225 66 1015 267 25 360SRP.200.80.374.11 20.0 1181 1257 1058 1225 66 1015 267 25 430SRP.180.80.381.11 18.0 1181 1257 1058 1225 66 1015 267 25 405SRP.240.80.418.11 24.0 1181 1257 1058 1225 66 1015 267 25 430SRP.180.80.422.11 18.0 1181 1257 1058 1225 66 1015 267 25 405

P2 [kW]

A [mm]

B [mm]

C [mm]

D [mm]

E [mm]

F [mm]

G [mm]

H [mm]

Weightincl. bracket

[kg]Type

The Grundfos wastewater range

The range > 1�

S range – 29 kWBrochure covers the Grundfos range of

submersible channel-impeller pumps from 5 kW up to 21 kW and Super-

Vortex pumps up to 29 kW. All designed for handling unscreened raw sewage.Available in 50 Hz and 60 Hz versions.

S range 15 – 155 kWBrochure covers the Grundfos range of

sewage pumps from 15 kW up to 155 kW for handling of raw sewage in

heavy-duty applications.Available in 50 Hz and 60 Hz versions.

S/SA ranges Up to 520 kWBrochure covers the Grundfos range of super-heavy-duty channel pumps, axial flow pumps, and propeller pumps from 7.5 kW up to 520 kW.

DW ranges 0.7 – 20 kWBrochure covers the Grundfos range of portable dewatering pumps (DW) from 0.8 kW to 20 kW for pumping raw water with abrasives.

S range pumps 1.65 – 5.0 kW Brochure covers the Grundfos range of

heavy-duty submersible SuperVortex and channel-impeller pumps from 1.65 to 5.0 kW. All suitable for unscreened sewage.

Stainless steel heavy-duty submersible pumps

Brochure covers the Grundfos range of heavy-duty stainless steel pumps (SEN)

for aggressive and corrosive environ-ments.

Multilift M, MD, MDV, and MD1 rangesBrochure covers Grundfos lifting stations for individual as well as multi-user applications.

LC/LCD Ranges – level controllersBrochure covers the Grundfos range of controls for the wastewater pumping systems.

AMD, AMG, and AFG rangesBrochure covers the new range of mixers

and flowmakers for optimal control of liquids and solids throughout the

wastewater treatment process.

SEG range 0.9 – 4.0 kW Brochure covers the Grundfos range of

sewage grinder pumps (SEG)-for pumping of wastewater with toilet discharge.

DP, EF, SE1, and SEV ranges 0.6 – 2.6 kWBrochure covers the Grundfos range of submersible channel-impeller and Super-Vortex-impeller pumps from 0.6 to 2.6 kW. Designed for handling drain-age, effluent and sewage from private dwellings.

Prefabricated pumping stationsBrochure covers the Grundfos range of prefabricated pumping stations for collecting and removing drainwater, surface water, domestic and industrial wastewater and sewage.

SE1 and SEV ranges 1.1 – 11 kWThis brochure describes the innova-

tive SEV/SE1 pump lines. Fitted with SuperVortex or single-channel impellers,

these pumps can meet approximately 80% of all wastewater pumping needs.

Submersible recirculation pumpsBrochure covers the Grundfos range of

SRP submersible recirculation pumps for wastewater treatment plants

and flood control.Available in 50 Hz and 60 Hz versions.

www.grundfos.com

Business with an attitude

Knowledge The sharing of knowledge, experience

and expertise across our global network will always

lead our business forward.

Innovation Combining the best technology with fresh

ways of thinking, we will continue to develop even bet-

ter pumps, systems, services and standards.

Solution With a complete product range, capable

of providing every conceivable water solution, we are

the most complete player on the market.

Being responsible is our foundation Thinking ahead makes it possible

Innovation is the essence

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