Here we have provided comprehensive lists of commonly asked questions regarding our fluidics products and related applications. This information is designed to support your inquiries, but if you don’t find the answers you are looking for we encourage you to contact us for further assistance.
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Most likely a corroded thrust bearing is causing the noise. The bearing is located on the valve shaft and is normally well lubricated. If the valve has been mounted with the stator facing up, solvents leaking onto the valve could have leaked down the stator screws and into the thrust bearing. The thrust bearing can be easily replaced.