Grundfos Water Pump Horizontal Multistage Centrifugal 1.5HP, CM5-4

Grundfos CM5-4 Horizontal Multistage Centrifugal Water Pump – 1.5 HP (220–240V)
The CM5-4 is a compact, high-efficiency multistage booster pump designed for quiet, reliable pressure boosting in villas, apartments, RO/UF systems and light commercial use. Its corrosion-resistant stainless-steel hydraulics and electro-coated cast-iron parts deliver long service life, while built-in protections keep your system safe.

Why you’ll like it

• Powerful & efficient: 1.5 HP motor with high hydraulic efficiency for strong, steady pressure.

• Quiet comfort: Low-noise operation ideal for indoor installation.

• Built for longevity: Cast-iron pump housing (electro-coated) with stainless-steel impellers for wear and corrosion resistance.

• Dry-run protection: Automatically stops if water supply is lost to prevent damage.

• Thermal protection: Built-in motor overload/overheat protection.

• Compact footprint: CM series design makes installation and service easy.

• Wide duty range: Suits multiple outlets and long pipe runs.

Typical applications

• Domestic & light-commercial pressure boosting

• RO/filtration and water treatment systems

• Villas, apartments, small buildings, irrigation and transfer

Technical highlights

• Model / Series: CM5-4

• Motor Power: 1.5 HP (Single-phase, 220–240V, 50/60 Hz)

• Pump Type: Horizontal multistage centrifugal

• Head (max): ~38 m (at nominal point per CM5-4 curve)

• Liquid Temperature: 20°C to 120°C

• Start/Stop: F-class insulation, up to 80 cycles/hour

• Materials: Cast-iron housing (electro-coated); stainless-steel impellers & wetted parts

• Protection: Dry-run stop, thermal overload

• Warranty: 1-Year (manufacturer’s limited warranty)

In the box: Pump assembly & user manual (fittings/valves/cables not included unless stated).