TPE 65-250/2 S-A-F-A-BQQE-KWB In-line Pump

The Grundfos TPE 65-250/2 S-A-F-A-BQQE-KWB in-line pump is a single-stage, monobloc centrifugal pump with an in-line design, engineered to move water in heating, cooling, recirculation, and industrial applications. Its “top pull-out” configuration allows for easy removal of the motor-hydraulic assembly for maintenance without dismantling the pipe housing, reducing downtime.

Installation Advantages

• In-line design: suction and discharge on the same axis for direct pipe mounting.
• Top pull-out concept: faster maintenance without removing the pump body.
• Integrated speed control: adapts the operating point to system demand.
• Built-in differential pressure sensor for regulation and hydraulic stability.

Recommended Applications

• Circulation in heating and air conditioning circuits.
• Chillers, fan-coils, and hydraulic distribution loops.
• Recirculation and boosting in commercial and industrial buildings.
• Processes requiring variable flow/pressure control.

Technical Specifications

• Type: in-line centrifugal pump, single stage, close-coupled (monobloc).
• Nominal flow rate: 51.7 m³/h.
• Nominal head: 20.2 m.
• Maximum head: 25 m.
• Hydraulic data base speed: 2930 rpm.
• Actual impeller diameter: 138 mm.
• Pumped fluid: water.
• Liquid temperature range: -25 to 120 °C.
• Permissible ambient temperature: -20 to 50 °C.
• Maximum working pressure: 16 bar.
• Pipe connection: DN 65.
• Pressure class: PN 16.
• Port-to-port length: 360 mm.
• Primary mechanical seal: BQQE (according to EN 12756).
• Curve tolerance: ISO 9906:2012 3B.
• MEI (Minimum Efficiency Index): ≥ 0.7.

Electrical and Control Data

• Motor: 112MC.
• Rated power (P2): 4 kW.
• Network frequency: 50 Hz.
• Rated voltage: 3 x 380–500 V.
• Rated current: 7.60–6.20 A.
• Power factor (cos φ): 0.92–0.87.
• Speed range: 360–4000 rpm.
• Motor efficiency (class): IE5.
• Protection rating: IP55.
• Insulation class: F.
• Frequency converter: integrated.
• Control panel: HMI300 (Advanced).
• Function module: FM300 (Advanced).

Materials

• Pump body: cast iron.
• Impeller: cast iron.

Dimensions and Weight

• Port-to-port length: 360 mm.
• Net weight: 67 kg.
• Gross weight (packaged): 86 kg.
• Shipping volume: 0.383 m³.
• Packing dimensions (logistics reference): 812 x 600 x 800 mm (height x width x length).

Product Identification

• Manufacturer: Grundfos.
• Model: TPE 65-250/2 S-A-F-A-BQQE-KWB.
• Reference: 99114670.
• EAN: 5712607033668.

Selection Recommendations

• Confirm the operating point (m³/h and mWC) and circuit pressure losses before sizing.
• For systems with variable control, review the regulation mode (proportional/constant pressure or other strategies) according to the installation.
• Check fluid compatibility and conditions (temperature/pressure) with the materials and mechanical seal.