Grundfos - TP 300-390/4 A-F-A-BQQE-VX3 Inline Single Stage Circulator Pump - 725v - Three Phase - Cast Iron

Single-stage, close-coupled, volute (centrifugal) pump unit with in-line suction and discharge ports of identical diameter. The pump is of the top-pull-out design, i.e. the power head (motor, pump head and impeller) can be removed for maintenance or service while the pump housing remains in the pipework. The pump is equipped with an unbalanced rubber bellows seal. The shaft seal is according to EN 12756. All pipework connection is via PN 16 DIN flanges (EN 1092-2 and ISO 7005-2). The pump is equipped with a fan-cooled asynchronous motor.

Suitable for: Commercial air conditioning

Real-world product applications

• Circulating water around closed-loop pipework systems
• Maintaining flow through distribution circuits
• Supporting recirculation in building services installations
• Keeping consistent flow through equipment or pipe runs
• Assisting with loop circulation for system efficiency

Key Product Features

• Net weight: 1250 kg
• Mains frequency: 50 Hz
• Rated Head: 28.23 m
• Max Head: 390 dm
• Rated Flow: 811.4 m³/h
• Product Voltage: 3 x 380-420D/660-725Y V
• Temperature Liquid Range: -25 .. 120 °C
• Pumped Liquid: Water
• Port to Port Length: 1240 mm
• Connection Size: DN 300
• Type of connection: DIN
• Maximum Operating Pressure: 16 bar
• Impeller Material: Cast Iron
• Pump Housing Material: Cast Iron

This is a Grundfos Circulator pump which can be used within closed loop cooling, heating and hot water systems.

Grundfos (est. 1945) is a Danish pump manufacturer known for high-efficiency circulators, multistage boosters, borehole and wastewater pumps, plus packaged pressure systems. The range covers HVAC circulation, domestic hot water recirculation, pressure boosting, industrial water transfer and public water management, with strong focus on energy efficiency and intelligent controls.