Pedrollo PKm 60 Peripheral Pump 0.3 kW for Clean Water

Pedrollo PKm 60 pump explained

The Pedrollo PKm 60 is a small peripheral impeller pump for clean water, rated for up to 40 l/min (2.4 m³/h) and up to 40 m of head with a 0.30 kW (0.40 HP) two-pole motor. It has a cast iron body, a brass impeller and an aluminium motor bracket with a brass cover. Seven Star LLC supplies the PKm 60 in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer.

In the Pedrollo naming system the lower-case m after the letters marks the single-phase version (PKm 60), while the same pump without the m (PK 60) is the three-phase version for 230/400 V. The number 60 identifies the size within the PK family. The manufacturer states that the PKm 60 has been in production since 1974 and that it is the company’s most economical and versatile model, so spare parts and service knowledge are widely available.

PKm 60 technical specifications

The values above come from the manufacturer technical data for the series. Individual models inside the PKm 60 range differ in power, head and current, so always confirm the exact model code before ordering.

How the PKm 60 works and what limits it

The datasheet gives a shutoff head of 40 m falling to 5 m at 40 l/min, a steep curve typical of a peripheral impeller. That means the PKm 60 is chosen for low-flow, higher-head jobs such as filling a small pressure tank, not for moving large volumes. The suction capability is up to 8 m of manometric suction head, the working pressure limit is 6 bar, and the liquid temperature range is -10 to +60 °C. Single-phase models carry IE2 motors and three-phase models IE3, both with class F insulation and thermal protection built into the single-phase winding.

A peripheral (side-channel) impeller is a disc with radial vanes cut around its rim. Liquid enters the vane pockets, is thrown outwards, returns and is re-accelerated many times in one revolution, which is why a small peripheral pump reaches a high head from a low flow and a modest motor. The trade-off is that the flow is small and the narrow clearances do not tolerate sand, fibres or scale. For the PKm 60 the liquid must therefore be clean and free of abrasive particles, and the suction line must be kept airtight so the pump can prime and hold its prime.

PKm 60 models and performance data

The heads in this table are read from the first point of the manufacturer 50 Hz performance table and fall as flow increases, so use the full curve for the real duty point. Where a 60 Hz version is needed, ask us: the manufacturer states that 60 Hz motors are available on request for many models.

Where the PKm 60 fits: related Pedrollo pumps

Related peripheral pumps from the same maker are the PQ range for higher heads up to 100 m and the PV range with a brass body for liquids up to 90 °C. For self-priming duty with a longer suction line look at the JSW 1-2 or JCR, and for a pressure-boosting set use a vertical multistage such as the MK.

Selecting a PKm 60 pump: checklist

• Confirm the duty is small: below 40 l/min and below 40 m total head
• Check the liquid is clean water without abrasive particles, at no more than 60 °C
• Choose PKm 60 (single-phase 230 V) or PK 60 (three-phase) to match the supply
• Keep the suction lift within 8 m and the system pressure within 6 bar
• Pair with a small autoclave tank if the pump will supply a garden or orchard network

Installing and maintaining the PKm 60

Mount the pump on a firm, level base with the motor shaft horizontal and the terminal box accessible. Keep the suction pipe as short and as direct as possible, rising continuously towards the pump with no air pockets, and fit a foot valve or a non-return valve when the pump sits above the water level. Fill the pump body with liquid before the first start, because a dry start damages the mechanical seal. Check the rotation direction on three-phase versions, protect the motor with a correctly rated overload device, and keep the motor ventilation path clear of dust. Plan to inspect the seal and the shaft end if the pump is used after a long idle period, since mineral deposits can bind the impeller.

PKm 60 applications in Oman and the GCC

In Oman and the GCC the PKm 60 is typically bought for garden and orchard watering, small tank transfer, and as a replacement for older household pumps. Dust and high summer temperatures put stress on small motors, so keep the pump shaded and ventilated, and note the ambient limit of +50 °C. It is a domestic and light-duty pump, not suited to sea water, brackish water with sand, or sustained industrial duty.

Heat is the main enemy of small peripheral pumps in the Gulf. Direct sun on a pump house can push the motor beyond its stated ambient limit, so provide shade and airflow, and keep sand and dust away from the terminal box. Where the supply water is hard, scale will build up in the narrow vane clearances over time, and a periodic descaling or a filter ahead of the pump extends life.

Information to send with your PKm 60 RFQ

• Required flow rate and total head at the duty point, including static suction lift
• Liquid type, maximum temperature and any dissolved solids or chlorine
• Power supply: single-phase or three-phase, voltage and frequency (50 Hz or 60 Hz)
• Pipe size and thread type at suction and delivery
• Quantity, delivery location and whether a pressure tank, switch or control is also needed

Documents and quotation

The manufacturer datasheet for the PKm 60 is attached on this page, and the performance tables in it should be checked against your duty point. Seven Star LLC is an independent supplier in Muscat and is not affiliated with the manufacturer.

Send the model code, quantity, voltage and frequency and the duty point, and we will confirm availability and prepare a quotation for Oman and the GCC.