Spike's thermowell features a 1.5" TC on one end and a 1/2" NPT on
the other. This allows it to attach directly to the secondary TC fitting
on the FLEX. The NPT port on the outside allows for the thermometer to
be screwed in. It also allows for an optional digital temp sensor to be
The thermowell can be packed with thermal grease to help temperature response times.
-1.5" TC x 1/2" NPT