The Argon Atomic Mass flow controller for a 7900 ICPMS is it a common part to break??

We replaced the Argon Atomic Mass Flow Controller for a 7900 ICPMS in September of 2018 and now the same part has broken again.  Is this a common part to break or have any others had issues with this part breaking as well??  Are there any tips to get this part to last longer?? Thanks

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