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Variable Frequency Drives for Centrifugal Pumps

The prices of low-voltage variable frequency drives (VFDs) have declined substantially since they were introduced, while the cost of power has increased. Normal project economics will now justify these VFDs — which go up to 375 kW (500 hp) or…

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Designing Chemical-Injection Systems

Many CPI applications require the injection of chemicals, such as corrosion inhibitors, precipitation inhibitors, oxygen scavengers and countless others, into the process during operation. Follow these tips to design and operate a system that ensures accurate delivery of performance chemicals,…

A new valve series for control applications

The new V Series modulating ball valve is designed for controlling pressure, temperature flow and level. The valve body is available in carbon or stainless steel with NPT, Socket Weld, Tri-Clamp and 150# or 300# flanged end connections. Sizes are…

A boost in durability and UV protection for waterborne coatings

The new high-performance ultraviolet (UV) absorber Hostavin 3330 disp. XP enhances the durability and UV protection of waterborne coatings, enabling them to reach the performance of conventional solvent-borne systems, says the producer. Hostavin 3330 disp. XP has an active UV…

A new, larger drive size added to this modular valve series

By expanding the valve line to include drive sizes up to 130 mm, globe valves, angle seat and diaphragm valves of the Element Series can now be used to achieve fittings up to orifice dia. DN 50. The expanded area…

The next generation in dome design debuted at Weftec

This company has unveiled an innovative, flush-batten-aluminum geodesic dome design, which may be considered a new paradigm in engineered cover technology. OptiDome features a double web I-Beam for strength and stability, plus optimized patent-pending, batten seal technology that eliminates environmental…

This solenoid valve operator is removable under pressure

Manual operators are often included on solenoid valves to enable functional checking during startup and commissioning. These operators are then removed prior to the plant being handed over to operations personnel to prevent potential trips or unplanned shutdown. The new…

Volkswagen and BASF present the first Science Award Electrochemistry  

The first international “Science Award Electrochemistry” from BASF SE (Ludwigshafen; www.basf.com) and Volkswagen AG (Wolfburg; both Germany; www.volkswagen.com) goes to Dr.Naoaki Yabuuchi, Tokyo University of Science, Institute for Science and Technology (Tokyo, Japan). The jury of experts from BASF, Volkswagen…

This concentrate pump operates with steam, air or more

The new Pivotrol PTF4 is a high-capacity, pressure-powered condensate pump that covers a wider motive-pressure range. This new version can be operated by steam, air or other pressurized gases, and covers a complete pressure range of up to 200 psig.…

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A concept for making gasoline from air

Air Fuel Synthesis Ltd. (AFS; Darlington, U.K.; www.airfuelsynthesis.com) has recently demonstrated a process for producing carbon-neutral liquid hydrocarbon (HC) fuel from air-captured carbon dioxide and hydrogen. The proof-of-concept demonstration facility, located at Teesside, England produces 5–10 L/d of liquid HCs.…