Motorised injection rate control.

Supports accurate, repeatable injection of offshore chemicals, reducing downtime and chemical waste.

The TESCOM™ RC-X motorised injection rate control valve, which supports accurate, repeatable dosing of offshore chemicals to maintain flow assurance for refineries and reduce overall chemical injection costs, has just been announced.

Flow assurance is a critical component in the design and operation of offshore production facilities, especially as the industry moves to deeper water, longer tiebacks, deeper wells and higher temperature and pressure reservoirs. The transition to these new environments can introduce conditions that restrict flow, such as hydration, corrosion or the buildup of wax, asphaltene, scale and emulsion.

Refineries use chemical treatment to mitigate these blockages. However, over or under injection of chemicals has several detrimental effects. Over injection increases chemical consumption and resulting costs as well as additional field trips to replenish chemical storage tanks. It can also adversely impact downstream processing or treatment programs and result in contamination penalties. Under injection can be ineffective, risking mechanical integrity and production output.

“Proper chemical dosing in deepwater and high-pressure/high-temperature refining environments can prevent blockages and flow instability, helping to ensure optimum fluid behavior, protect asset integrity and stimulate production,” said Julia Villa, product marketing manager with Emerson’s fluid and motion control business. “Specifically designed to work with Micro Motion™ Coriolis flow meters in offshore chemical injection processes, TESCOM RC-X motorised injection rate control valves enable accurate dosing that reduces downtime and chemical waste associated with over injection.”

With a short-stroke design (less than 1/8 of an inch), TESCOM RC-X control valves are accurate up to 15,000 pounds per square inch (psi) and offer ultra-low flow rates of 0.02–500 liters per hour and repeatable function with 4–20 milliampere (mA) control for precise flow assurance. Electric actuation eliminates air requirements, preferrable when compressed air is unavailable or unreliable.

Available in medium- and high-pressure models, modular TESCOM RC-X control valves are lightweight and compact, with a smaller motor footprint than similar chemical injection rate products, allowing for smaller, lighter skid designs.

The valve itself also has fewer moving parts than comparable products, reducing risk of mechanical failure over time, performing more consistently and requiring less maintenance. They’re explosion-proof, IP67-rated and are compliant to NACE MR0175.

Designed to meet a variety of industry demands, Micro Motion Coriolis flow meters deliver accurate, repeatable mass flow measurement for liquids, gases or slurries. The Emerson TESCOM™ RC-X motorised injection rate control valve helps offshore refineries achieve accurate, repeatable chemical injection, reducing chemical waste, downtime and overall operating costs.

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Valves for hydrogen fueling stations.

15,000 pounds-per-square-inch double block bleed and hand valves offer redundant protection from high pressure and superior sealing technology to avoid leaks

The TESCOM™ Anderson Greenwood Instrumentation H2 Valve Series for hydrogen applications up to 15,000 pounds-per-square-inch (psi) (103.4 MPa) has been launched by Emerson. The new solution reliably isolates process pressure in high pressure gas applications such as hydrogen fueling stations and tube trailers, reducing fugitive emissions and improving safety.

As it moves from tank to pump, hydrogen is transferred at pressures of up to 15,000 psi (103.4 MPa). To protect personnel and prevent leaks, it must be effectively controlled and isolated. The Double Block Bleed (DBB) valve’s positive double block arrangement provides two layers of positive shutoff that shield maintenance staff from high pressure during instrument maintenance. Its modular design reduces the number of potential leakage points, and the reinforced sealing technology reduces the risk of fuel entering the atmosphere through the valve stem.

Among the cleanest fuels when produced using renewable resources, compressed hydrogen gas is used to power fuel cell electric vehicles (FCEVs). In 2021, 142 new hydrogen refueling stations began operating, the biggest increase in a single year, raising the total to 685 active stations worldwide. And, in January 2022, Global Market Insights Inc. predicted that the FCEV market will exceed $15 billion by 2027. To meet this growth demand, fueling station original equipment manufacturers (OEMs) must source reliable, high-performance components to ensure overall equipment effectiveness and ensure station safety.

“Given the pressures that hydrogen is subject to in these applications, it’s critical that equipment operates safely and reliably, every time. That’s why we’re committed to specifically developing components to help our customers effectively store and precisely control compressed hydrogen gas,” said Rob Lindquist, director of global marketing for TESCOM precision fluid control at Emerson.

The hand-operated, maintenance-free design of the hand valves and double block and bleed valves in the H2 Valve Series minimizes maintenance and downtime. With low operating torque and adjustment-free seal technology, these hand valves deliver a low cost of ownership in a compact solution.

For OEMs looking to safely minimize risks for operators, the H2 Valve Series provides several safety features. Each valve has a convenient QR code, allowing operators to quickly access the valve’s specs during maintenance and installation. The product also ensures that no high-pressure liquid or gas is released during maintenance. The valves are compliant to the ISO 19880-3 hydrogen fueling standard.

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