Grundfos

NB 250-500/409 AASF1AESBQQETW5

Non-self-priming, single-stage, centrifugal volute pump unit designed according to ISO 5199 with dimensions and rated performance according to EN 733 (10 bar). Flanges are PN 10 with dimensions according to EN 1092-2. The pump has an axial suction port, radial discharge port, horizontal shaft and a back pull-out design enabling removal of the motor, motor stool, cover and impeller without disturbing the pump housing or pipework. The unbalanced rubber bellows seal is according to DIN EN 12756. The pump is close-coupled to a fan-cooled asynchronous motor.

Suitable for: Commercial air conditioning, Industrial heating, Irrigation

NK 250-500/409 AA2F1AESBQQETW5

Non-self-priming, single-stage, centrifugal Pump engineered according to ISO 5199 with dimensions and rated output according to EN 733. Flanges are PN 10 with dimensions according to EN 1092-2. The Pump has an axial suction port, a radial discharge port and horizontal shaft. It is of the back pull-out design enabling removal of the motor, coupling, bearing bracket and impeller without disturbing the Pump housing or pipework. The unbalanced rubber bellows seal is according to DIN EN 12756. The Pump is equipped with a foot-mounted, fan-cooled asynchronous motor. Pump and motor are mounted on a common base frame.

• Suitable for Commercial heating,
• This product's housing material is Cast Iron
• The impeller is manufactured from Cast Iron
• Maximum operating pressure: 10 Bar.
• Temperature liquid range: -25 .. 120 °C.

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.