LZ Series Vertical Submerged Pump

The LZ series is a vertical submerged centrifugal pump bolted to a top plate and hung over the tank or pit opening, with the pumping end immersed in the liquid and the motor above it.

It shares the published range of the submerged family — 2–600 m³/h, heads of 8–100 m, immersion depth 0.5–3 m — and the top-plate mounting makes it straightforward to drop the pump into an existing opening and lift it out for service.

The standard construction handles liquids up to 100°C, with a high-temperature version available to 300°C, and there is no external mechanical seal in the liquid.

Typical service covers chemical transfer, acid and alkali unloading, wastewater sumps and cooling tower basins, and as with every submerged pump the wetted materials must be matched to the liquid.

The LZ series is published as a capacity and configuration range. Confirm flow, head, immersion depth and the top-plate dimensions against the actual tank or pit opening before ordering.

• Mounting: a bolted top plate supports the pump over the tank or pit opening, so the unit can be lifted out for inspection without draining the vessel in many installations.
• Seal arrangement: no external mechanical seal in the liquid — the shaft passes through a bearing column to the immersed impeller.
• Temperature options: standard construction for liquids up to 100°C and a high-temperature version up to 300°C.
• Immersion depth: 0.5 to 3 m as standard, customisable for deeper tanks and pits.
• Wetted materials: selected for the acid, alkali, wastewater or cooling water handled; confirm corrosion and solids with the enquiry.
• Drive: electric motor above the surface; confirm voltage, frequency, top-plate size and shaft length with the enquiry.

• Chemical transfer: transfers chemical liquids from tanks, vessels and process pits.
• Acid and alkali unloading: unloads acid and alkali from containers, tankers and storage vessels.
• Wastewater sumps: removes wastewater collected in sumps and below-floor chambers.
• Cooling tower basins: circulates water from cooling tower basins and water pits.
• Metal treatment lines: serves pickling, plating and rinse tank duties in metal processing.
• Process water recovery: returns process water from collection pits for reuse or treatment.

• Confirm the top-plate size and bolt pattern against the tank or pit opening, since the LZ pump is supported by that plate.
• Check the liquid temperature: standard construction suits up to 100°C and the high-temperature version up to 300°C.
• Verify that the wetted materials suit the acid, alkali or wastewater being handled before ordering.
• Keep solids below about 5% by weight; state the solids content with the enquiry.
• Match flow and head to the duty point, and allow for the discharge pipework route from the pump column.
• State the required immersion depth so the shaft length matches the tank depth.