Food & Drink Process & Packaging Issue 31 2020 | Page 56

Extremely accurate , pulseless dosing from Slack & Parr Ltd

Formed in 1917 , Slack & Parr Ltd made their first precision gear metering pump in the 1940 ’ s . After decades of gaining experience and knowledge in the very demanding man-made fibre arena , this technology was then offered up to the wider Industrial market involving paints , additives , pharmaceuticals , sealants , foodstuffs , adhesives , oils and fuels to name just a few of the processes that have since benefited from this approach .
The manufacturing method of incorporating spur gears , precision lapped mating faces and extremely small , controlled tolerances ensures accuracy of within 1 % in many applications . Indeed , for some fluid pumping processes that require high accuracy , pulseless flow and constant reliability , a gear metering pump is the only real solution .
Slack & Parr ’ s latest range has been specifically designed to work with very low viscosity fluids - including water - and with potentially high pressures , but still offer all the benefits expected from a precision gear metering pump . When required , our Design Team can then combine this with Slack & Parr ’ s unrivalled knowledge of the special materials needed for aggressive or corrosive applications , including the use of ceramics and other exotic materials if necessary .
While the latest range of pumps is designed specifically for low viscosities , alterative ranges of pumps are also available that have been developed to cope with extremely high viscosities and high pressures . All these details , coupled with the fact we can offer FDA approved materials and ATEX rating where necessary , mean a Slack & Parr precision metering pump could be a perfect fit for a customer ’ s food application .
While standard pumps are available to cover flow rates from approximately 1cc / min up to 500 Litre / min , standard pumps are not always the right answer . An off-the-shelf product could possibly resolve some of the customer ’ s problems , but is that enough ? What is often the right approach is for the end user and the pump manufacturer to work together and produce a very specific custom-designed solution that solves every problem . If the ultimate requirement is for extreme accuracy , pulseless metering , control of exact dispensing , repeatable proportions for mixing processes , or any number of other precision food-related applications , then Slack & Parr ’ s history , experience , design knowledge and manufacturing expertise make then the perfect partner to choose .
56 FDPP - www . fdpp . co . uk www . slackandparr . com / fdpp