July/August 2019

SPOTLIGHT HOLMBURY says it has been in the business of offering quick release couplings (or “QRC’s”) for over 30 years and has one of the most comprehensive product ranges on the market but recently it discovered a very interesting fact. During the recent PlantWorx 2019 exhibition it discovered that more than 60% of people, who visited its stand, stated that their biggest day to day issue concerning QRC’s was dealing with trapped pressure. Air entering the system from the pump side is a common problem and cavitation as this phenomenon is commonly called, can be caused by a variety of factors. Air or fluid loss can occur at a variety of different places such as valves, hose fittings or even the hose itself and a further, often overlooked, culprit can be thermal expansion of the media. This can occur when high temperatures generated within the system decrease the density of the hydraulic oil which in turn leads to an increased volume/expansion and trapped pressure. The good news is that Holmbury says it has a variety of solutions available, but people seem to be unaware. For example one of the most commonly used couplings, the ISO16028 flat faced male, is not designed to be connected under pressure. The Holmbury HCP series male is fully interchangeable with this and is designed to be connected under pressure. Please visit www.hpmag.co.uk to read the full release. w | www.holmbury.com UNIFLEX says its new HM crimpers are setting new standards and the HM 480 is a perfect example, combining high productivity and quality with outstanding ergonomics and a long service life. The machine offers an opening stroke of more than 150 mm and an opening diameter of 380 mm (without dies). It can thus be used to crimp industrial hoses up to 8” with ANSI flanges and pipe fittings up to 12” without having to remove the dies. The fixed 6-o’clock die and the 150 mm long bottom die make workpiece positioning easy. Apart from hydraulic hoses, the machine can be used to join reinforcing steel, steel cables, ropes and insulators with forces up to 4500 kN. t | +49 (0) 6039/9171-270 TOP PRODUCTION CRIMPER ATAM a leading encapsulated coil, industrial connector and sensor supplier, has announced it has upgraded its cable entry connectors with a new control circuit for solenoid valves, whilst also employing advanced new techniques to dramatically speed up manufacture. The company says thanks to these improvements, production of the cable entry connectors has been streamlined to achieve an impressive output of 10,000 pieces a day, resulting in significantly reduced customer lead times. ATAM’s cable entry connectors, which can be used in numerous pneumatic and hydraulic applications, incorporate a new control circuit with provides important additional functions. t | 024 7632 6060 e | sales@atam.uk.com CABLE ENTRY CONNECTORS WITH NEW CONTROL CIRCUIT HYTEK FUEL & LUBRICATION EQUIPMENT says it only supplies trade distributors and is supporting them with a suite of booklets and catalogues. The company says the current counter-top booklets contain a range of specialist products, highlighting ranges that appeal to customers, all in one place. The booklets all feature the “list price” for products, and can be customised with own branding for extra impact. The AdBlue booklet contains 21 of Hytek’s best selling products to help customers manage, dispense and handle their AdBlue stock. Also available is a Fuel, Oil & Workshop Equipment booklet,. These booklets are offered FREE to Hytek account holders, and can be branded with a logo on the front as well. t | 01279 815 600 e | sales@hytekgb.com HERE OGO GOE OUR Y L S COUNTER TOP BOOKLETS & WHITE-LABEL CATALOGUES TRAPPED PRESSURE AND QUICK RELEASE COUPLINGS Based on a proprietary and patented crosslinking system that has been developed specifically for the chemical processing industry, DuPont Kalrez Spectrum 7275 seals are reported to exhibit minimal swelling and improved retention of physical properties when exposed to aggressive chemicals such as concentrated nitric acid, organosilanes, chlorosilanes, pure ethylene oxide, butyraldehyde, amines, vinyl monomers and acrylic monomers. Kalrez 7275 seals are available in the UK from authorised distributor DICHTOMATIK. Any process plant that uses chemicals as an inherent part of its operations knows the importance of reliable, long-lasting seal technology. With Kalrez 7275, which is a special perfluoroelastomer product, users are said to enjoy excellent compression set resistance and good retention of physical properties after ageing at high temperatures. In fact, the seals can deliver a higher level of performance in any aggressive chemical processing application with temperatures up to 300°C, especially where high resistance to strong oxidisers such as nitric acid, chlorine and chlorine dioxide is required. Among those able to vouch for the benefits of Kalrez 7275 is a paper mill in North America that relies on chlorine dioxide for its pulp bleaching operations. The paper mill was experiencing frequent failures of a pump handling chlorine dioxide in water. According to the reliability engineer, the incumbent non-black FFKM seal typically failed within 5 months of installation because of the extremely aggressive nature of the stream. However, following replacement of the seals with Kalrez 7275, seal life doubled to more than 12 months, removing the pump from the paper mill’s list of “bad performers” and into routine yearly maintenance. t | 01332 524401 e | kalrez@dichtomatik.co.uk w | www.dichtomatik-kalrez.co.uk SEALS DELIVER LONG LIFE

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