A guide to testing control valve positioners April 2017, Comtest Valves, the actuators that move them, and the electronic circuits that control them, are all subject to ageing after they are installed. Valve seats wear from repeated seating and from the liquid or gas ...
Periodic valve testing eliminates downtime February 2017 Although plant designers tend to treat them as ‘necessary evils’, it is obvious that control valves play a key role in process quality and reliability. Extreme care must be taken to avoid costly premature ...
Schroeder high pressure valves February 2017, Valve & Automation Schroeder Valves has introduced the Schroeder High Pressure Valve SHP. This automatic recirculation valve was developed for extremely high pressures and also works reliably under fluctuating load conditions. ...
New generation of knife gate valves from Stafsjö February 2017, Valve & Automation In 1928, Stafsjö started to manufacture knife gate valves in close co-operation with nearby pulp and paper mills. Now the company has introduced its eighth knife gate valve generation, the MP, which is ...
V-port ball sector rotary control valve January 2017, Valve & Automation NAF’s Setball SF ball sector valve offers excellent flow characteristics at a competitive price.
Pinch valve with innovative sleeve liner December 2016, Macsteel Service Centres For many years, pinch valves from Schubert & Salzer Control Systems have proved to be superior when working with difficult media or under sterile conditions. In sizes ranging from DN 15 to DN 50, these ...
New Wilden FIT Pumps for mining applications November 2016 The new FIT Pump range is an upgraded series of pumps, which have been designed with the same dimensions as the existing Wilden Original Series. “This new FIT Pump together with Wilden’s ProFlo Shift ...
Pneumatic volume booster shortens valve switching time November 2016, Macsteel Service Centres Pneumatic positioners match the particular current valve setting with the set-point signal as a control value. The control air, as the input quantity, generally corresponds to a unit signal of 0,2 to ...
Brubin T series leads the way in sustainable pumps November 2016 The T Series is an armoured high performance magnetic drive pump fitted with replaceable liners in PVDF and ETFE materials. These are applied mainly in process applications that require a completely leak-free ...
Precise control with segment disc valves October 2016, Macsteel Service Centres
Segment disc valves work on a very simple but effective principle. The central throttling elements – the segment discs that glide and seal against each other – are positioned in the valve body perpendicular ...
High-quality angle seat globe valves for use in pure steam applications October 2016 Valve solutions must satisfy strict demands when used in complex pure steam systems, such as those in the foodstuff or pharmaceutical industries. The GEMÜ 505 and GEMÜ 555 pure steam valves are manufactured ...
Emergency shut-off valves increase reliability at Serbian refinery August 2016, Valmet Flow Control South Africa With a large investment in its new mild hydrocracking and motor fuel hydro-treatment facility, the NIS Gazprom Neft refinery in Serbia aimed to upgrade its production quality to Euro Level 5. To do so, ...
