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Non-Original Equipment Manufacturers (OEM) supply valve parts to the process industry at prices that are 30 to 40 per cent less than the list price from the original manufacturer, and claim to meet or even exceed the quality of the original parts. The first part is certainly true, but the quality claim is questionable at best.

This case study shows how collaboration between a leading producer of sealing materials and a high-end valve manufacturer has led to extremely efficient valve isolation solutions for refineries.

Financial constraints in the oil and gas industry are, more than ever, driving demand for reliable products and professional service with a quick response time. Duxvalves has responded by developing a new range of actuators which have the features required for control and choke valve actuation in a variety of sectors.

Optimal process control depends on multiple components working properly. However, positioners, actuators, and valves are the only pieces of equipment that move, which means they’re often the weak link of the loop. This movement causes problems such as hysteresis, stiction, and increased response time, reducing the overall control loop performance. Proper actuator selection is necessary to address these problems, because actuators are at the center of every moving part of the control valve.

Adding electronic instrumentation and automation to a water management system can provide enormous benefits, but it can seem daunting when first moving from a purely hydraulic system. While there are many instrumentation and automation options available, an electronic control system does not have to be overly complicated. Control valves are a natural place to start since they already perform much of the control in water management.

AUMA technology helping to ensure a reliable supply of drinking water for Sabah Al Ahmad Sea City, Kuwait. The electric actuator manufacturer has supplied 42 SA and SAR actuators with AC controls and gearboxes, plus four SIMA master station control systems, to a large water storage project in the city. The contract is noteworthy for its use of optical fiber communications and AUMA’s SIMA master stations to monitor and control the actuators in parallel with the plant’s distributed control sys

Financial constraints in the oil and gas industry are, more than ever, driving demand for reliable products and professional service with a quick response time. Duxvalves has responded by developing a new range of actuators which have the features required for control and choke valve actuation in a variety of sectors.

Looking at developments which have led to the innovation of new scotch yoke control actuation technology.

Through conduit gate valves are manufactured as per standard API 6D. These valves are preferred for dirty (suspended/abrasive) or fouling service because of the fact that, unlike normal gate valves, their wedge/gate (closure member) is not open to flow stream and so free from jamming or obstruction. These valves are suitable for onshore and offshore application and can be used for isolation purposes.

This article looks at the history and properties of Nickel Aluminium Bronze to help understand why this material is often overlooked. On the contrary, Nickel Aluminium Bronze has good tensile strength, is suitable against cavitation (eg propellers in shipbuilding), does not embrittle at cryogenic temperatures, and is resistant to biofouling. Furthermore, advancements in computer simulation have also overcome traditional challenges in casting processes.