CAST IRON THERMOCOUPLE PROTECTION TUBES
Application: aluminium and zinc melting furnaces and all other applications where mechanical strength is needed;
preheating not required!
Max. Temperature: with ceramic coating ('C') up to 800°C
without coating ('U') up to 875°C
all protection tubes: one piece special alloyed casting
Connection: ¾" NPT inside thread standard;
threads other than ¾" NPT available upon request
Type: CIPT-(length in ")-C (with ceramic coating)
CIPT-(length in ")-U (without ceramic coating)
Also available completely assembled with elements, extension tubes, flanges, connections etc.
cast iron tube
Various standard types :
POIDS LONGUEUR LONGUEUR
CIPT-12-C 3 kg 12 " 305 mm
CIPT-18-C 4 kg 18 " 460 mm
CIPT -24-C 5 kg 24 " 610 mm
CIPT -30-C 7 kg 30 " 760 mm
CIPT -36-C 8 kg 36 " 915 mm
CIPT -42-C 9 kg 42 " 1065 mm
CIPT -48-C 10 kg 48 " 1220 mm
CIPT -54-C 12 kg 54 " 1370 mm
CIPT -60-C 13 kg 60 " 1525 mm
CIPT -66-C 14 kg 66 " 1675 mm
CIPT -72-C 15 kg 72 " 1830 mm
CIPT -96-C 25 kg 96 " 2440 mm
thermocouple protection tube
Safety and Best Practice SiC Tubes
Thermal Shock Characteristics: The high Graphite and Silicon Carbide content (circa 90 %) give the thermocouple protection tubes very high thermal shock resistance which allows repeated immersion into molten aluminium without risk of cracking.
Additional coating of the tubes is NOT necessary.

Safety and Best Practise: TPTs from any source should never be immersed in molten aluminium or other metals unless they have been previously dried at above 100º C to remove any water that may have been accidentally spilled on them.  This is also applicable to any other fluids such as oil, suspending liquids for wash coatings etc.  In the latter case the tubes must be heated to a temperature sufficient to remove them.  Failure to carry out the safe practices detailed above risk causing cracking of tubes in an explosive manner.
It is considered best practice to keep the thermocouples in a warm and dry storage area.