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Grundfos 99274386 - SEG.50.31.2.50B
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Grundfos 99274386 - SEG.50.31.2.50B
Grundfos Pumps & Systems

Grundfos 99274386 - SEG.50.31.2.50B

GRUNDFOSSKU: 99274386

Delivery date to be confirmed on Sales Order

or Call for most up to date lead times. (781) 281-8905

Description

Grundfos — World's Largest Pump Manufacturer · Bjerringbro, Denmark
99274386 · Submersible Grinder Pump
SEG4.16HP400-415V3.0-Phase50 HzIP68Cast iron

The Grundfos 99274386 (SEG.50.31.2.50B) is a Submersible Grinder Pump. Grinder pump for pumping effluent and untreated sewage. Compact design for residential sewage grinder stations. Rated 400-415V, 3.0-Phase, 50 Hz. Applications include Plumbing: Sewage, Residential wastewater, Municipal wastewater transport and more.

Power
4.16HP
Voltage
400-415V
Phase
3.0-Phase
Frequency
50 Hz
Max Pressure
87.02psi
Max Fluid Temp
104°F
Grundfos
World's largest pump manufacturer — engineering and manufacturing in 17 countries since 1945
Industrial Grade
Built and tested to IEC and NEMA standards
Authorized Distributor
Genuine Grundfos product — full manufacturer warranty coverage
Expert Support
Technical help available — call (781) 281-8905 or chat
Why This Product

Genuine Grundfos Part

OEM component engineered and manufactured to Grundfos specifications. Maintains pump performance and warranty coverage.

Full Traceability

Genuine Grundfos parts carry manufacturer traceability from production through delivery. No counterfeit risk.

Authorized Source

PumpStop is an authorized Grundfos distributor. All parts are genuine — not aftermarket, not surplus.

Confirm Compatibility

Always verify part number against your pump model number and serial number before ordering. Contact PumpStop for parts identification assistance.

Technical Support Available

PumpStop technical team can identify correct parts from pump nameplate data, serial number, or model code. Call (781) 281-8905 or chat.

Contact for Availability

Parts availability varies. Contact PumpStop to confirm stock, lead time, and pricing before placing an order.

Model Information — 99274386
Series: SEG
Impeller Material: Cast iron
Housing Material: Cast iron
Flange Rating: PN 10
Technical Specifications
Model Number 99274386
Product Series SEG
Series Description Submersible Grinder Pump
Power 4.16HP
Voltage 400-415V
Phase 3.0-Phase
Frequency 50 Hz
Motor Speed 2900rpm
Full Load Current 7A
Motor Protection PTO
Insulation Class F
Protection Class (IP) IP68
Max Operating Pressure 87.02psi
Max Fluid Temperature 104°F
Outlet Connection DN 50
Pipe Pressure Rating PN 10
Impeller Material Cast iron
Housing Material Cast iron
Approvals / Certifications PA-I
Applications
Plumbing: Sewage
Residential wastewater
Municipal wastewater transport
Stormwater control
Important Notices
Electrical Verify supply voltage, phase, and frequency match nameplate before installation: 400-415V, 3.0-Phase, 50 Hz.
Temperature limits Do not exceed max fluid temperature 104°F. Exceeding limits damages seals and motor insulation.
Dry running Do not run dry. SEG pumps use the pumped fluid to lubricate the shaft seal. Dry running destroys the seal within seconds. Install dry-run protection on all automatic installations.
Maintenance Refer to the Grundfos Installation and Operating Manual (IOM) for correct installation, commissioning, and maintenance. Contact PumpStop for documentation.
Documentation
✓ Installation and Operating Manual (IOM) — SEG Series
✓ Product Data Sheet — 99274386
✓ Service Manual and Spare Parts List
Need the IOM, data sheet, or spare parts list? Contact PumpStop and we'll send it over.
Before You OrderConfirm model code, voltage, phase, and frequency match your installation. For sizing help, spare parts, or documentation, call (781) 281-8905 or chat with PumpStop.
Grundfos — 99274386 · 99274386Authorized Grundfos Distributor · pump-stop.com
EAN
5713826395810
Applications
Wastewater, Industrial applications
Additional I/O
External
Approvals
PA-I
Approvals and markings
23.8 m
Auto-coupling
97695874
AUTOADAPT
NO
Battery back-up
23.8 m
Built-in motor protection
THERMAL SWITCH
Cable type
07RN8-F
Colour
23.8 m
Connect code
0.71
Connection
DN 50
Control box
not included
Cos phi - p.f. at 1/2 load
0.71
Cos phi - p.f. at 3/4 load
0.81
Curve tolerance
ISO9906:2012 3B2
Density
62.29 lb/ft³
Enclosure class (IEC 34-5)
IP68
Explosion proof
no
Flange standard
DIN
Flow range
23.8 m
Head max
23.8 m
Housing
Cast iron
Impeller
Cast iron
Inst dry/wet
SUBMERGED
Insulation class (IEC 85)
F
Length
23.8 m
Length of cable
10 m
Liquid temperature range
32 .. 104 °F
Mains frequency
50 Hz
Material Pricing Group
7
Max flow
8.61 l/s
Max starts per hour
30
Maximum ambient temperature
104 °F
Maximum current consumption
0.71
Maximum installation depth
7 m
Maximum operating pressure
6 bar
Moisture sensor
without moisture sensors
Moment of inertia
0.237 lb ft²
Motor
23.8 m
Motor efficiency at 1/2 load
0.79
Motor efficiency at 3/4 load
0.82
Motor efficiency at full load 1
0.84
Net weight
157.0 lb
Number of leads
23.8 m
Number of poles
2
Pipework connection
DN 50
Power 1
3.7 kW
Power factor 1
0.86
Power input - P1
3.7 kW
Pressure rating
PN 10
Pressure retention valve
23.8 m
Primary shaft seal
SIC/SIC
Product family
SEG
Pump housing
Cast iron
Pump inlet
0.71
Pump outlet
DN 50
Rated current
0.2916666666666667
Rated current at no load
3.1 A
Rated power - P2
3.1 kW
Rated speed
2900 rpm
Rated voltage
3 x 400-415 V
Real Time
Delivery date to be confirmed on Sales Order  Update with real time availability and Net price
Sens.interface
23.8 m
Standard
DIN
Start. method
direct-on-line
Starting current
43 A
Thermal protec
external
Type
07RN8-F
Type of cable plug
No plug
Type of impeller
Grinder system
Valve type
23.8 m
Voltage tolerance
+6/-10 %

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