Thermowells

TMS manufacture and/or supply 3 main types of protection tubes or thermowells.

These are:
  • Pipe and tube
  • Bar stock (solid drilled)
  • Ceramics and other non-metallic thermowells



1. Pipe and tube thermowells for various environments are manufactured. The following alloys are available:
304 SS, 310SS, 316 SS, 446, 904, Alloy 600, Alloy 601, 253 MA.


Some of the more common constructions include:
Screwed parallel


Rolled close (peened)


Flanged parallel


Flanged parallel step-down




2. Solid drilled (barstock) thermowells are manufactured mainly for high pressure and EX- environments. Materials include, but are not limited to:
304 SS, 316 SS, Hastalloy ® C, Alloy 600, Alloy 601, Titanium.

Some of the more common solid drilled constructions include:
Tapered weld-in


Screwed parallel


Screwed step-down


Flanged parallel


Flanged step-down


Flanged tapered


3. Ceramic and other non-metallic types for high temperature and specific chemical environments:

These include but are not limited to:
  • Pythagoras (1400º),
  • Alsint (re-crystallised alumina - 1700º),
  • Si-Carbide,
  • Syalon (nitride bonded SiC)
  • Graphite
  • PTFE (teflon)