TTEC`s MVD Thermowells are designed for applications where thermowells will be exposed to highly abrasive conditions such as are found in Power Plant Coal Pulverizers. Product life has always been a problem in these applications, where barstock wells can be eroded away within short periods of time. For these difficult applications, TTEC designed Thermowells which utilize a process known as Mechanical Vapor Diffusion (MVD). Tungsten Carbide is fused with the thermowell material and becomes an integral part of the mass of the well. A new and substantially harder thermowell is the result of the MVD Process. The MVD Process is normally applied to the insertion portion of the Thermowell.