Pedrollo TURBO Twin-Impeller Centrifugal Pump

Pedrollo TURBO pump explained

The Pedrollo TURBO is a twin-impeller centrifugal pump for clean water, rated up to 200 l/min (12 m³/h), up to 68 m of head and 10 bar, with cast iron inlet and outlet parts and stainless steel impellers. Seven Star LLC supplies the TURBO in Oman and the GCC as an independent supplier in Muscat, not affiliated with the manufacturer.

The code has a size number (4 or 6) and a letter (A, B or C) for impeller trim. The datasheet lists TURBO 4B at 1.1 kW (53 m), TURBO 4A at 1.5 kW (66 m), TURBO 6C at 1.1 kW (48 m), TURBO 6B at 1.5 kW (58 m) and TURBO 6A at 2.2 kW (68 m). TURBOm means single-phase.

TURBO technical specifications

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

How the TURBO works and what limits it

Two stainless steel AISI 304 impellers in series give a head between that of a single-impeller pump and a full multistage pump. Limits are suction up to 7 m, liquid -10 to +90 °C, ambient -10 to +40 °C, 10 bar and IP X4, with an AISI 431 shaft.

In a multistage centrifugal pump the liquid passes through several impellers in series, each stage adding head to the stage before it. The number of stages therefore sets the head, while the impeller width and motor power set the flow. The stage count is part of the model code, so a longer code number means a higher head at the same pipe size. Stable pressure, quiet running and a compact footprint are the practical benefits compared with a single-stage pump of the same head, and the pump gives its best efficiency when operated close to the middle of its curve.

TURBO 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 TURBO fits: related Pedrollo pumps

Single-stage alternatives are the CP and 2CP; for more stages see the MK and HT-PRO.

Selecting a TURBO pump: checklist

• Choose size 4 for lower flow or 6 for up to 200 l/min
• Choose A, B or C for head
• Verify 10 bar, 90 °C
• Single-phase TURBOm or three-phase TURBO
• Fit with a pressure tank if used as a booster

Installing and maintaining the TURBO

Place the pump on a level, rigid base and tighten the anchor bolts evenly so the pump body is not stressed by the piping. Support the suction and delivery pipes independently, fit isolating valves on both sides to allow servicing, and add a non-return valve on the delivery side. Prime the pump fully before starting, because the stages must be filled with liquid to avoid running dry. Check the motor rotation on three-phase units, fit overload protection matched to the nameplate current, and make sure the pump never runs against a closed delivery for more than a short time. For pressure boosting, size the tank and pressure switch (or use a variable-speed controller) so that the number of starts per hour stays within the motor limit.

TURBO applications in Oman and the GCC

The manufacturer recommends booster sets and storage tanks, mains pressure boosting and irrigation. In the GCC it suits compact boosting for buildings, workshops and farms where a stainless impeller is wanted at moderate cost. Keep the water clean and cool in summer by shading pipework.

In hotels, hospital blocks and industrial sites around Muscat, Sohar and Salalah, multistage pumps run for long hours at steady pressure. Rooftop tanks can warm the water significantly, so check the temperature limit, and keep plant rooms ventilated. Chlorinated or desalinated supply water is normally acceptable only if the wetted material suits it, so state the water source on your enquiry.

Information to send with your TURBO RFQ

• Duty point: flow rate and required discharge pressure or head
• Suction conditions: flooded or lift, available NPSH and pipe size
• Liquid, maximum temperature and presence of chlorine or solids
• Supply: phase, voltage and frequency, and the starting method
• Quantity and whether a pressure tank, switch, controller or spare seal is requested

Storage, handling and spares for the Pedrollo TURBO

Store the Pedrollo TURBO in a dry, covered place and keep it in its packaging until installation. If the pump is stored for a long time, turn the shaft by hand from time to time where the design allows it, so that seals do not stick. In Oman and the GCC, protect the motor and cable from direct sun and sand before installation.

• Check the pump nameplate against the duty point and the power supply before installation.
• Flush the pipework before connecting the pump, so that welding debris or sand does not enter the hydraulic parts.
• Never run the pump dry; fit level control or dry-running protection where the application needs it.
• Keep a spare mechanical seal kit and, for submersible models, a spare cable joint kit for planned maintenance.

When you send an RFQ for the Pedrollo TURBO, state the flow, head, liquid and power supply. With this information the right model and any spare parts can be confirmed together.

Documents and quotation

The manufacturer datasheet for the TURBO 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.