impeller.net The Online Pump Magazine

12.07.2006

Clean and Gentle Pumping with Topwing

TopWing rotary lobe pumps offer a tough and reliable performance without compromising hygiene, so they are ideally suited to transferring delicate, shear-sensitive liquids in food, pharmaceutical and ...

... other similar applications. Available from JP Pumps (a division of Johnson Pump AB), the TopWing range comprises eight models with connections from 25mm to 100mm, delivering capacities up to 156 m3/h and maximum pressures up to 15 bar.

The pumps are designed to ensure optimum hygiene and cleanability, combined with smooth, gentle handling and meet the needs of GMP (Good Manufacturing Practice) in ‘high clean industries’, as confirmed by a range of accreditations. For example; EHEDG (European Hygienic Engineering & Design Group), FDA (Food & Drug Administration) and ASME BPE 2002 (International Standard for Bioprocessing Equipment).

TopWing pumps incorporate a specially shaped Bi-wing rotor which promotes smooth flow, low pulsation and high volumetric efficiency. This rotor design results in small clearances which ensures less backslip and gentler treatment of shear sensitive liquids and soft particles. The design also means fewer pockets where bacteria can hide, and this, combined with an all stainless steel construction, means TopWing pumps are easy to clean, both by CIP (clean-in-place) and SIP (steam-in-place).
With less agitation and shear, TopWing can handle delicate liquids containing both soft and hard particles, without product degradation as well as being able to handle liquids of varying viscosities and temperatures.

Other features and benefits include; ease of maintenance, as the shaft seal can be changed without the need to disassemble the rotor case, a robust bearing arrangement with pre-loaded taper roller bearings without shimming.

The pumps are designed for trouble-free operation thanks to their heavy-duty construction, the rotors, shaft and retainers are made from duplex stainless steel with the resultant benefits of, less shaft deflection and a greater resistance to wear.

A range of options are available to enable the pumps to suit specific application requirements. For example, choice of seals including O-ring, single mechanical or double mechanical seal, with the added option of fitting a quench or flush seal assembly. The pumps can also be fitted with safety relief valves, which can be spring loaded and air loaded with air lift. A variety of connections can also be fitted, such as rectangular inlets which improve NPSH characteristics. The pumps can also be jacketed if required.

JP Pumps

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