Grundfos multistage pumps

Compact, reliable, horizontal, multistageGrundfos centrifugalpumps with radial suction port and
discharge port. The shaft, impellers and chambers are made of stainless steel. The inlet and
discharge parts are made of cast iron. The mechanical seal is a special type O-ring, unbalanced. The
piping connection is by Whitworth internal threads, Rp (ISO 7/1).
The pumps are equipped with a base-mounted, air-cooled, 1-phase asynchronous motor.

Liquid:

Pumped liquid: Water

Liquid temperature range: -20 ... 90 °C

Liquid temperature during operation: 20 °C

Density: 998.2 kg/m³

Technical:

Speed per pump data: 2900 rpm

Flow rate: 3.1 m³/h

Head: 34.7 m

Primary mechanical seal: AVBE

Approvals on nameplate: CE,WRAS,ACS,TR,EAC

Curve tolerance: ISO9906:2012 3B

Materials:

Pump body: cast iron

EN-JL1030

ASTM 30 B

Impeller: Stainless steel

DIN W.-Nr. 1.4301

AISI 304

Rubber: EPDM

Installation:

Max ambient temperature: 55 °C

Max operating pressure: 10 bar

Max pressure at cited temperature: 6 bar / 90 °C

10 bar / 40 °C

Standard flange: WHITWORTH RP threading

Pump suction: Rp 1

Pump discharge: Rp 1

Electrical data:

Motor type: 71B

IE efficiency class: NA

Power - P2: 0.5 kW

Mains frequency: 50 Hz

Voltage: 1 x 220-240 V

Service factor: 1

Current: 3.1-2.8 A

Starting current: 530 %

Rated speed: 2730-2740 rpm

Protection class (IEC 34-5): IP55

Insulation class (IEC 85 ): F

Others:

Minimum Efficiency Index, MEI ≥: 0.7

Net weight: 12.5 kg

Gross weight: 15 kg