Find us on X on LinkedIn via Email Twitter Linked In Email a link to a colleague Ashcroft Thermowells are utilized when pressure, high velocity and corrosive process media exist. This serves to isolate and protect the sensing instrument, and permits removal of a sensing instrument without shutting down the process Screwed Thermowells Model SM, ST, RT and HTSolid bore constructionSelection of materialsStandard and customer specificationISO 228-1 and ANSI/ASME B1.20.1 connections Download a datasheet