Pedrollo CPm 158

KSh27,000.00

Parameter	Specification
Power Output	1.0 Horsepower (0.75 kW)
Operating Voltage	220V–230V AC, 50Hz (Single-phase standard household power)
Current Draw	6.0 Amps
Maximum Head (Lift)	36 meters ( $\approx 3.6 \text{ bar}$ / 52 PSI)
Optimal Working Range	12 to 34 meters
Maximum Flow Rate	5,400 Liters per Hour ( $5.4 \text{ m}^3/\text{hr}$ or 90 L/min)
Maximum Suction Depth	7 meters (Requires a foot valve to hold prime)
Inlet / Outlet Size	1-inch x 1-inch female BSP threaded ports
Enclosure Protection	IPX4 (Splash-proof)

The Pedrollo CPm 158 is a premium, Italian-engineered 1.0 HP centrifugal surface pump. It is widely recognized as an industry benchmark for clean water transfer and irrigation due to its reliability, high volumetric flow rate, and quiet operation.

Unlike peripheral pumps (which prioritize massive pressure over volume), the CPm 158 uses a wider centrifugal impeller to throw large amounts of water efficiently over medium-range distances.

Detailed Technical Specifications

Parameter	Specification
Power Output	1.0 Horsepower (0.75 kW)
Operating Voltage	220V–230V AC, 50Hz (Single-phase standard household power)
Current Draw	6.0 Amps
Maximum Head (Lift)	36 meters ( $\approx 3.6 \text{ bar}$ / 52 PSI)
Optimal Working Range	12 to 34 meters
Maximum Flow Rate	5,400 Liters per Hour ( $5.4 \text{ m}^3/\text{hr}$ or 90 L/min)
Maximum Suction Depth	7 meters (Requires a foot valve to hold prime)
Inlet / Outlet Size	1-inch x 1-inch female BSP threaded ports
Enclosure Protection	IPX4 (Splash-proof)

Real-World Head vs. Flow Performance

Centrifugal pumps operate on an inverse curve where water volume decreases as the height it needs to travel increases.

At 15 meters height: Delivers roughly 4,800 Liters per Hour (80 L/min)—ideal for rapid tank filling.
At 25 meters height: Delivers roughly 3,300 Liters per Hour (55 L/min)—perfect for driving multi-sprinkler irrigation systems.
At 34 meters height: Drops to roughly 600 Liters per Hour (10 L/min) as it nears its physical pressure ceiling.

Core Structural Features

Stainless Steel & Brass Build: The pump is constructed with a heavy-duty cast iron body treated with an anti-corrosion coating. The internal shaft is made of high-grade stainless steel (EN 10088-3), and the spinning impeller is machined from pure brass to eliminate rust-scaling.
Continuous Duty Motor (Class F): The motor is rated for “Class F” insulation and “S1” continuous duty. This means it can safely run non-stop for hours at a time during hot irrigation cycles without degrading the motor windings, provided it has proper ventilation.
Internal Thermal Overload: A built-in thermal switch is embedded directly inside the single-phase motor windings. If the pump jams or runs dry and begins to overheat, it automatically cuts power to prevent the motor from melting.

Best Applications

Bulk Water Transfer: Moving water quickly between a low-lying ground tank or borehole reservoir up to a rooftop storage tank.
Agricultural Irrigation: Powering low-to-medium pressure overhead lawn sprinklers, micro-sprayers, or extensive drip irrigation setups.
Pressure Boosting Kits: Can be paired with an automatic digital pressure controller (like the Pedrollo EasyPress) to serve as a high-flow water pressure booster for larger homes or commercial buildings.

⚠️ Installation Reminder: The CPm 158 is a surface pump and cannot be submersed. It must be mounted in a dry, ventilated, weatherproof enclosure. Before turning it on for the very first time, you must manually fill the pump body with water via the priming bolt to prevent damaging the mechanical ceramic-graphite seals.