Pedrollo HT-PRO Vertical Stainless Multistage Pump

Pedrollo HT-PRO pump explained

The Pedrollo HT-PRO is a range of vertical multistage centrifugal pumps made entirely of stainless steel AISI 304, rated up to 800 l/min (48 m³/h) and up to 160 m of head with a 16 bar working-pressure limit. The sizes are HT 3-PRO, HT 5-PRO and HT 8-PRO, with up to ten stages in the HT 3-PRO. Seven Star LLC supplies the HT-PRO in Oman and the GCC as an independent supplier in Muscat.

A code like HT 3/7-PRO means the flow class is 3, the stage count is 7, and PRO identifies this stainless steel generation. HTm is single-phase and HT is three-phase. The datasheet lists HT 3/4-PRO at 0.75 kW (65 m), HT 3/7-PRO at 1.8 kW (113 m) and HT 3/10-PRO at 3 kW (160 m), plus HT 5 and HT 8 models in the same family. The datasheet also states MEI of at least 0.40.

HT-PRO technical specifications

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

How the HT-PRO works and what limits it

Housing, sleeve, impellers, diffusers and cover are AISI 304 stainless steel, with an AISI 431 shaft. The limits are suction up to 7 m, liquid -15 to +90 °C, ambient up to +40 °C, 16 bar and IP X4. The manufacturer recommends it for water distribution along with pressure tanks to raise network pressure, fire-fighting systems and heavy-duty cleaning.

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.

HT-PRO 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 HT-PRO fits: related Pedrollo pumps

The HT series already listed on this site is the related family; the MK is the lower-cost Noryl alternative, and the FCR 15-30 is the horizontal stainless version. For a variable-speed unit see the VSP.

Selecting a HT-PRO pump: checklist

• Select HT 3, 5 or 8 from the flow
• Select the stage number from the head up to 160 m
• Check the 16 bar limit including inlet pressure
• Liquid temperature -15 to +90 °C
• Single-phase HTm or three-phase HT

Installing and maintaining the HT-PRO

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.

HT-PRO applications in Oman and the GCC

In Oman and the GCC the HT-PRO is a good fit for building pressure boosting, car wash and cleaning systems, industrial process water and irrigation systems that need steady pressure. Stainless steel handles humid coastal plant rooms well, although chloride content in the water should still be checked.

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 HT-PRO 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

Documents and quotation

The manufacturer datasheet for the HT-PRO 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.