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Weld-In Thermowells are available in a variety of materials, process connection sizes, lengths and optional lagging extensions. Thermowell specifications should be based on process conditions which include strength, temperature, pressure and corrosion resistance requirements. Weld-In thermowells are welded directly into the process apparatus. They are designed with a standard 0.260" or 0.385" bore diameter to accommodate sensing elements with a 0.252" or 0.377" maximum diameter, respectively. The tapered design is suited for heavy-duty applications where greater rigidity is required due to process conditions. These wells are available as separate components or as part of complete sensor assemblies.
Weld-In Thermowells
Unit of Measure
1 

Item #

Item Name

Pipe Size (P)

Nominal Pipe Diameter "P"

Diameter "V" at 0.260 Inch (in)

Diameter "V" at 0.385 Inch (in)

WI4D09T2C8S N/A 3/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 3/4 in N/A 1.050 in N/A 5/8 in N/A 49/64 in
WI4D09T2C22S N/A 3/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 3/4 in N/A 1.050 in N/A 5/8 in N/A 49/64 in
WI4E09T2C8S N/A 1 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1 in N/A 1.315 in N/A 49/64 in N/A 49/64 in
WI4E09T2C22S N/A 1 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1 in N/A 1.315 in N/A 49/64 in N/A 49/64 in
WI4F09T2C8S N/A 1-1/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/4 in N/A 1.660 in N/A 1 in N/A 1 in
WI4F09T2C22S N/A 1-1/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/4 in N/A 1.660 in N/A 1 in N/A 1 in
WI4G09T2C8S N/A 1-1/2 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/2 in N/A 1.900 in N/A 1-1/8 in N/A 1-1/8 in
WI4G09T2C22S N/A 1-1/2 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/2 in N/A 1.900 in N/A 1-1/8 in N/A 1-1/8 in
WI6D09T2C8S N/A 3/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 3/4 in N/A 1.050 in N/A 5/8 in N/A 49/64 in
WI6D09T2C22S N/A 3/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 3/4 in N/A 1.050 in N/A 5/8 in N/A 49/64 in
WI6E09T2C8S N/A 1 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1 in N/A 1.315 in N/A 49/64 in N/A 49/64 in
WI6E09T2C22S N/A 1 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1 in N/A 1.315 in N/A 49/64 in N/A 49/64 in
WI6F09T2C8S N/A 1-1/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/4 in N/A 1.660 in N/A 1 in N/A 1 in
WI6F09T2C22S N/A 1-1/4 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/4 in N/A 1.660 in N/A 1 in N/A 1 in
WI6G09T2C8S N/A 1-1/2 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/2 in N/A 1.900 in N/A 1-1/8 in N/A 1-1/8 in
WI6G09T2C22S N/A 1-1/2 Inch (in) Pipe Size (P) Weld-In Thermowell N/A 1-1/2 in N/A 1.900 in N/A 1-1/8 in N/A 1-1/8 in
WI4J09T2C8S N/A 1-1/2 Inch (in) Outer Diameter (OD) Weld-In Thermowell N/A N/A 1.500 in N/A 7/8 in N/A 7/8 in
WI4J09T2C22S N/A 1-1/2 Inch (in) Outer Diameter (OD) Weld-In Thermowell N/A N/A 1.500 in N/A 7/8 in N/A 7/8 in
WI6J09T2C8S N/A 1-1/2 Inch (in) Outer Diameter (OD) Weld-In Thermowell N/A N/A 1.500 in N/A 7/8 in N/A 7/8 in
WI6J09T2C22S N/A 1-1/2 Inch (in) Outer Diameter (OD) Weld-In Thermowell N/A N/A 1.500 in N/A 7/8 in N/A 7/8 in
Unit of Measure
1