KOBOLD SMN variable area flow switches are used when extremely low flow switching points are required in combination with minimum pressure loss at high flow rates. Typical applications include the control of water and cooling circuits, high pressure cleaning devices, control of contaminated media in effluent and heating systems and a wide variety of other flow control systems. The liquid flow switch, with all-metal wetted parts, works on the float principle. However, it does not use the standard conical metering tube or slotted measuring nozzle. Instead, a float with an integral magnet is suspended within a cylindrical measuring tube. The float is moved by the flow stream against the magnetic field of an opposing magnet mounted in the top of the instrument. The magnetic field produced by the float activates a reed contact at the switch point. The reed contact is mounted on the outside of the SMN liquid flow switch body. The special construction of the switch’s float and flow tube means that only a low flow is required to raise the float and thus close the contact. When the float reaches the top of its travel, an additional flow path opens, allowing high flow rates without a significant increase in pressure loss. When the flow is interrupted, the float is moved back down the flow tube by the opposing magnetic field and the contact opens.
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KOBOLD is proud to offer many flow and level products that are BABA (Build America, Buy America) compliant. We have always been committed to producing high quality American made products that are known in the industry for their quality, longevity, and reliability. Learn more about BABA or to see a list of our current BABA complaint options (we are continuing to expand this list)
Learn more about BABATo learn more about KOBOLD's commitment to American manufacturing, watch this short video.
Choosing KOBOLD means opting for a partner who understands your needs and is equipped to help you tackle the challenges of modern industry. We are not just a supplier; we are a partner committed to contributing to your success.
Discover KOBOLD USA's expertise in industrial instrumentation, offering advanced solutions for flow, pressure, level, and temperature measurement. Our products, synonymous with quality and precision, cater to a wide range of industries, backed by expert engineering and exceptional customer support.
KOBOLD proudly serves clients globally with our extensive network of locations. In the USA, we're based in Pittsburgh, PA, providing top-tier service and expertise in flow measurement technology.
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