Inline Pump TP 25-90/2 A-O-A-BQQE-DW1

The Grundfos TP 25-90/2 A-O-A-BQQE-DW1, reference 98346604, is a single-stage inline centrifugal pump designed for heating, cooling, and air conditioning applications in commercial buildings. With a nominal flow rate of 7.88 m³/h and a head of 7.93 m, this pump is ideal for ensuring reliable operation in closed circuits with high standards of efficiency and durability.

This pump features an inline volute design with suction and discharge ports of the same diameter (DN 25 - 1 1/2"), facilitating installation without the need to redesign the piping. The top pull-out system allows easy removal of the motor, pump head, and impeller without dismantling the hydraulic body, speeding up maintenance tasks and reducing downtime.

It is equipped with an unbalanced bellows mechanical seal type BQQE in accordance with EN 12756, ensuring reliable sealing over a wide range of temperatures and pressures. The 2-pole asynchronous motor (type 71C) features fan cooling, efficiency class IE2, and a power of 0.37 kW, delivering excellent performance even under partial loads.

Recommended Applications

• HVAC systems in commercial buildings
• Water circulation in heating or cooling installations
• Hydraulic distribution in closed pressure systems

Hydraulic Specifications

• Nominal flow rate: 7.88 m³/h
• Nominal head: 7.93 m
• Impeller diameter: 89 mm
• Liquid temperature range: from -25°C to 120°C
• Maximum working pressure: 10 bar

Materials

• Hydraulic body: Cast iron EN-GJL-200 (ASTM class 30)
• Impeller: Composite PES with 30% glass fiber (PES+30% GF)

Installation Data

• Connection type: Thread G (ISO 228-1)
• Connection size: DN 25 – 1 1/2”
• Nominal pressure: PN 10
• Length between ports: 180 mm
• Permitted ambient temperature: from -30°C to +40°C

Electrical Characteristics

• Motor: Asynchronous 2 poles, type 71C
• Nominal power (P2): 0.37 kW
• Voltage: 1 × 220–230 V
• Frequency: 50 Hz
• Nominal current: 2.50–2.60 A
• Cos φ: 0.94–0.95
• Insulation class: F | Protection grade: IP55
• Nominal speed: 2700–2730 rpm

Additional Data

• Efficiency class IE: IE2
• Full load efficiency: 69.5%
• Minimum efficiency index (MEI): 0.70
• Net weight: 12.8 kg | Gross weight: 14.8 kg
• Transport volume: 0.041 m³
• Country of origin: Hungary

The Grundfos TP 25-90/2 A-O-A-BQQE-DW1 is an efficient, durable, and easy-to-maintain solution for thermal and HVAC applications that require operational reliability, low maintenance, and high hydraulic performance.