October 2020

Emerson has introduced the Fisher V280 full-bore trunnion- mounted ball control valve for severe and specialty pressure, flow and process control applications. The valve provides excellent dynamic process control by utilising a robust drive train unique to the market that is designed to guide the shaft and properly absorb energy. Available attenuators for liquid and gas process fluids offer an effective solution for combatting the negative consequences of cavitation, such as vibration, erosion and noise. Simplified design and reduced number of parts The body connections of the V280 valve have been re-engineered to significantly simplify the design and reduce the number of 28 HYDRAULICS & PNEUMATICS October 2020 www.hpmag.co.uk HYDRAULICS Emerson’s new full-bore ball control valve combats vibration, cavitation and noise parts, while utilising the same construction for the inlet and outlet. This allows an easy retrofit of single or dual ball seals with standard or customised noise attenuating aerodomes or anti-cavitation hydrodomes on the inlet, outlet or both. Typical applications include midstream oil and gas, particularly compressor anti-surge service. The V280 is a fully rated ANSI class 900 valve, available in 6”, 8”, 10”, 12” and 16” sizes. A variety of high-performance packing materials are available, including Enviro-Seal live-loaded packing. Optional special materials and constructions are available to accommodate specialty applications. The valve comes standard as a single-seal construction but is available with optional dual-seal construction, allowing bi-directional flow and double block-and-bleed operation. The standard offering V280 complies with the NACE MR0175/ISO 15156 Sour Service/Sour Crude oil standard, carries the full ASME B16.5 Class 900 flange rating, and can handle fluid temperature ranges from -20 to 180degF. Alternate seal options can handle temperatures from -50 to 400degF. The valve can be fitted with a number of different positioners or auxiliary devices to suit hazardous or challenging environments. Together with the Fisher V260 and V270 valves, the V280 provides users with a complete portfolio of full-bore ball control valves. www.Emerson.com The global standard components specialist, Norelem, has launched a new range of plain bearings for rotary stages, showcasing two different versions. This new range boasts simple assembly and high wear-resistant components for engineers working with rotating machinery. The first plain bearing in the range is made of aluminium, including the inner and outer ring. Between these two rings is a high-performance plastic plate, which provides a glide function, enabling lubricated and maintenance-free running. The second version of the bearing is made with an outer ring of aluminium and an inner ring of the same high- performance plastic as the other version. The aluminium parts of the bearings are anodised, making both bearings more durable and corrosion resistant. Both versions are available in three different diameters. Marcus Schneck, CEO of Norelem, says: “With this new range of plain bearings, our customers can choose bearings that are best suited for the application depending on the material. They can also be assured these parts will be maintenance free once installed, saving time and money in the long run.” Both bearings can be used in a temperature range of -50degC to 90degC, making them a must have for engineers working with machines that operate in extreme temperatures. Additionally, the materials that make up the bearings mean there is less elasticity present in the bearings. In turn this makes them more resistant to permanent deformation, offering high wear-resistance, robustness and secure use. The range of plain bearings are available to order directly from The Big Green Book, Norelem’s catalogue of over 60,000 standard components. www.norelem.co.uk Norelem, launches new range of plain bearings for rotary stages