What is the SLB Demco butterfly valve for data centers?
SLB comes to data center cooling from oilfield flow control, and the product it offers is a valve rather than a cooling machine. It belongs to the hydraulic circuit, alongside the pumps, strainers and couplings that a designer sizes together. The Demco butterfly valve is presented for cooling fluid service in immersion units, chillers and pump skids, and SLB rests the case on six decades of the same valve family in harsh industrial duty. The claimed benefits are specific enough to check. A dry stem journal keeps the stem out of the fluid, which reduces corrosion at the part that has to keep turning. A hard-backed cartridge seat is meant to simplify replacement rather than requiring the valve body to come out. SLB states a low pressure drop, which in a cooling loop is pump energy saved for the life of the plant, and an end-of-line service rating to 285 pounds per square inch. Operation can be specified as a chainwheel, lever or handwheel. SLB says the valve suits water or other liquids including two-phase refrigerants, and offers material selection against corrosion and erosion. What is not published is the flow coefficient by size, the pressure drop at a stated flow, the temperature range, or the size range offered for this duty. Those are the numbers a designer needs, so treat this as a capability statement and ask for the sizing data. SLB agreed in August 2026 to acquire Kelvion, which would add heat exchangers and heat rejection to this position.