Pedrollo TOP-VORTEX Submersible Pump for Grey Water

Pedrollo TOP-VORTEX pump explained

The Pedrollo TOP-VORTEX is a submersible pump with a vortex impeller for dirty or grey water, rated up to 170 l/min (10.2 m³/h) and up to 8.7 m of head, passing suspended solids up to 25 mm. It is built with a technopolymer housing and IP 68 protection. Seven Star LLC supplies the TOP-VORTEX in Oman and the GCC as an independent supplier in Muscat.

The three models, TOP 1-VORTEX, TOP 2-VORTEX and TOP 3-VORTEX, use 0.25, 0.37 and 0.55 kW single-phase motors and give shutoff heads of 7, 7.6 and 8.7 m. The VORTEX impeller is designed to keep a wide free passage for solids.

TOP-VORTEX technical specifications

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

How the TOP-VORTEX works and what limits it

Draining capability is 25 mm, maximum depth is 3 m with an appropriately sized power cable, and liquid temperature is up to +40 °C (+90 °C intermittent for up to three minutes). The impeller is Noryl and the motor sleeve is AISI 304.

A submersible drainage pump has its motor and hydraulic end in one sealed unit that sits in the liquid itself. The surrounding liquid helps cool the motor, a double shaft seal separates the water from the windings, and the impeller moves the liquid up the delivery hose or pipe without any priming. The shape of the impeller sets what the pump can pass: a vortex or channel design leaves a free path for solids, whereas a closed multi-vane impeller gives more head on clean water. The data sheet therefore states both the maximum solid size and the draining capability, meaning the lowest level at which the pump still moves water.

Because the vortex impeller sits recessed in the casing, solids pass through with little contact with the vanes, so the efficiency on clean water is lower than for a closed-impeller pump such as the TOP. That is the price for the 25 mm passage. The three models use the same technopolymer housing and the same 3 m depth limit, so the choice between them comes down to head: 7 m, 7.6 m or 8.7 m at the first table point, with flow dropping to zero near the top of that range. When the delivery pipe is long, check the friction loss against these low heads before choosing a model.

TOP-VORTEX 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 TOP-VORTEX fits: related Pedrollo pumps

For clean water see the TOP, for larger solids the TEX and BC, and for stainless steel the RX.

Selecting a TOP-VORTEX pump: checklist

• Choose by head (7 to 8.7 m)
• Check solids up to 25 mm
• Depth up to 3 m
• Single-phase
• Check the cable length

Installing and maintaining the TOP-VORTEX

Place the pump on a firm base inside the sump, not directly on silt, so the inlet is not blocked. Connect a delivery pipe or hose of at least the port size, and add a non-return valve when the head is significant or when several pumps share one line. Use the float switch type recommended for the model and make sure the float swings freely and cannot catch the pipe or the cable. Never carry or lift the pump by the electric cable, keep the cable end above any possible water level, and respect the maximum immersion depth. Rinse the pump after dirty duty, clean the inlet area from time to time, and inspect the cable, float and seal before the flood season or before heavy use.

TOP-VORTEX applications in Oman and the GCC

The manufacturer lists draining dirty water, emptying tanks, domestic drains and clearing sumps. In the GCC it works for car-park drains, garden pits and air-conditioning condensate sumps with some debris.

Drainage pumps in Oman see two quite different duties: steady daily sump emptying, and rare but severe flood events after heavy rain in the wadis. For the second case a spare pump kept dry and tested beforehand matters more than anything else. Keep the electrical connection above the flood level, protect the supply with an earth-leakage device and keep sand away from the inlet.

Information to send with your TOP-VORTEX RFQ

• Required flow and delivery head including pipe losses
• Liquid: clear water, grey water or sewage, and the largest solid or fibre length expected
• Sump dimensions, operating depth and the delivery pipe size
• Supply: voltage, frequency and phase, and control type (float switch, panel)
• Duty cycle, number of pumps and delivery location

Documents and quotation

The manufacturer datasheet for the TOP-VORTEX 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.