Water & Wastewater Treatment

18 WWT PUMP AND VALVE SUPPLEMENT 2018 Product Showcase Dickow Heavy Duty Mag-Drive Pumps Pumping specialists Michael Smith Engineers have been appointed as UK distributor for the full range of Dickow magnet drive and mechanical seal centrifugal and side channel pumps. The range includes the SCM Series horizontal magnet drive side channel pumps which are ideal for handling low flows (up to 30m³/hr) at high differential heads (up to 400 metres) at temperatures up to 180ºC. This side channel pump has the advantage of operating more economi- cally than centrifugal pumps on fluid handling applications involving low flows and high heads. Furthermore, the magnet drive design results in a range of important benefits. For example, there are no rotating seals to fail ensuring reduced downtime, optimised produc- tion and no cross contamination of the pumped fluid, resulting in increased operator safety and optimum process fluid containment. The tight clearances between the impeller and the discs enable them to generate high differential pressures and to self-prime – they are able to prime empty suction lines a'er initial filling with liquid. The SCM Series are also suited to handling liquid / gas mixture, allowing vessels to be fully emptied. Another safety feature is the design of the containment shell where in the event of bearing failure the possibility of rub on the containment shell is prevented which eliminates the potential for leakage. There is also an option to specify silicon carbide insert rings in the pump's pressure discs which provides short term protection in the event of dry running. Material options include ductile iron and stainless steel in close coupled and frame mount configurations. A modified design option with an inlet centrifugal impeller also enables the pumps to operate with NPSH (net positive suction head) of 1 metre or less. Dickow SCM pumps are suitable for handling clean liquids without solids in the chemical and pharmaceutical industries. When coupled with Ex-drive motors they can also be used in hazardous areas. HYDRA-CELL MT8 Series pumps A new range of high-pressure metering pumps offering features including virtually pulse-free operation, consistent high accuracy and hydraulic efficiency is now available from Michael Smith Engineers. HYDRA-CELL MT8 Series pumps will deliver positive displacement flows with highly repeatable accuracy so they are ideally suited to metering and dosing applications, where precise volumes of liquid are required in a specified time period. These pumps are designed to handle a variety of processing liquids at low flow rates and high pressures, exceeding API 675 performance standards for steady-state accuracy (±1%), linearity (± 3%) and repeatability (±3%). Electronic flow control increases accuracy and reliability and they are also available with a manual, variable speed gearbox for use in hazardous areas. Their integral multiple hydraulically actuated diaphragms ensure pulse-free, linear flows across a wide pressure range, without the need for expensive pulsation dampeners. They are also are easy to monitor ensuring simplified control systems. MT8 pumps are also hermitically sealed, which effectively separates the power end from the process fluid, helping to eliminate leaks and the associated risks and hazards along with the expense of seals and packing. Lutz B1 Battery and B2 Battery pumps Lutz has launched two new battery pumps that offer a step up in mobility, battery performance, weight, life, capacity and ergonomics as well as flexibility for the user. With the combination possibilities of the pump tubes in PP, PVDF and stainless steel in different lengths, a variety of fluids from different contain- ers can be transferred. The new BLDC motors offer up to 70 per cent efficiency, high battery life and service life, low weight and low noise (≤70dBA). Replaceable, high-performance Li-Ion technology enables a filling up to 2,500 litres with one battery charge and battery life of 25 minutes at maximum speed. The battery motor B1 Battery, with a performance of 75W, is suitable for small to medium filling quantities and a low viscosity (<200mPas) and low density (<1.2kg/dm3). The powerful 260W B2 Battery Motor is designed for medium to large filling quantities. Due to the extremely high performance with low weight, higher viscosities (>200mPas), higher pres- sures/flow rates and higher densities (>1.2kg/dm3) can be achieved. Equipped with the suitable accesso- ries, as hoses and valves, the pumps can be used immediately. Both motors also offer an automatic switch-off at overload.

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