Thermowells


Included in our thermowell series are standardized wells of threaded, ANSI flanged, Van Stone and Weld-in types.

Threaded wells are made in readily welded or brazed materials for installations requiring seal welding or brazing. The pipe thread provides the mechanical strength, the weld merely seals.

ANSI flanged wells consist of a bar-stock well which is permanently welded to a top quality flange. Standard construction uses primary “J” groove weld and a bevel groove secondary weld. Both welds are machined to produce a clean fillet. This double welded construction eliminates possibility of crevice corrosion since no open joints are exposed from either inside or outside the installation.

Socket weld types of wells can be installed easily by merely welding into place to form a clean and tight connection.

The insertion length “rule of thumb” of ten diameters is not always practical when installing thermowells. Care should be exercised to make certain that the sensitive tip is totally immersed into the medium being measured. Above all, be sure that the dead length — i.e. the length required to pass through walls, pipe fittings, etc. — is taken into account when choosing the necessary insertion length.

Our tapered thermowells provide greater rigidity than straight shank styles. They are well-suited to applications of high fluid velocity.

The thermowells shown on the following pages are available in standard bore diameters of .260″ for thermocouple elements to 14 gauge wire and .385″ for thermocouple elements to 8 gauge wire. Both are suitable for use with metal sheathed elements of compatible diameters.


6000 Series Standard Thermowell

6000 Series Standard Thermowell

Standard Bore Size: .260″ Reduced Tip for Faster Heat Response Brass Plug and Chain Optional

6100 Series Standard Lag Thermowell

6100 Series Standard Lag Thermowell

Standard Bore Size: .260″ Reduced Tip for Faster Heat Response Brass Plug and Chain Optional

6200 Series Standard Thermowell

6200 Series Standard Thermowell

Standard Bore Size: .260″ Tapered Design to Provide Greater Rigidity Brass Plug and Chain Optional

6250 Series Heavy Duty Thermowell

6250 Series Heavy Duty Thermowell

Standard Bore Size: .260″ Tapered Design to Provide Greater Rigidity Brass Plug and Chain Optional

6300 Series Heavy Duty Thermowell

6300 Series Heavy Duty Thermowell

Standard Bore Size: .385″ Tapered Design to Provide Greater Rigidity Brass Plug and Chain Optional

6350 Series Heavy Duty Thermowell

6350 Series Heavy Duty Thermowell

Standard Bore Size: .385″ Supplied with a Standard Lag Length Brass Plug and Chain Optional

6400 Series Test Thermowell

6400 Series Test Thermowell

Standard Bore Size: .385″ Brass Plug and Chain Standard

6500 Series Limited Space Thermowell

6500 Series Limited Space Thermowell

Standard Bore Size: .385″ Brass Plug and Chain Standard

6600 Series Socket–Weld Thermowell

6600 Series Socket–Weld Thermowell

Standard Bore Size: .260″ or .385″ Used in Seal Welded Applications for Maximum Vessel Integrity Brass Plug and Chain Optional

6700 Series Flange Thermowell

6700 Series Flange Thermowell

Standard Bore Size: .260″ or .385″ Flange is Fully Welded to Thermowell Brass Plug and Chain Optional

6800 Series Van Stone Thermowell

6800 Series Van Stone Thermowell

Standard Bore Size: .260″ or .385″ Can be Supplied with a Lap Joint Flange Brass Plug and Chain Optional