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Shell global standard with flange
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Measuring principle
Bar stock Thermowell
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Characteristic / Application
metric style
Vanstone type
with collar flange -
Head connection
thread:
1/2″ NPT
without connection -
Maximum standard immersion length
500 mm (19,69″)
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Max. immersion length on request
500 mm (19,69″)
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Process connection
Collar flange
1 1/2″ 150
1 1/2″ 300
1 1/2″ 400
1 1/2″ 600
1 1/2″ 900
1 1/2″ 1500
2″ 150
2″ 300
2″ 400
2″ 600
2″ 900
2″ 1500
2″ 2500
DN25 PN40
DN25 PN100
DN50 PN40
DN50 PN63
DN50 PN100
DN80 PN40 -
Thermowell root diameter
30 mm (1,18″)
20 mm (0,79″) -
Medium contact material
1.4401 (316)
1.4571 (316Ti)
Alloy400
Alloy625
A182 F51
A182 F55 -
Wetted part finishing (Ra)
<= 1,6 µm (63.00µin)
<= 0,8 µm (31.50 µin) or roughened to Ra=6 (0.24µm) -
Tip shape
conical or tapered
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Temperature range
-200…700°C (-328…1.292 °F)
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Max. process pressure (static)
depending on process connection up to 2500 lbs
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Max. process pressure at 400 °C
depends on process connection
Field of application
It is a specially designed thermowell for thermometer installation. The thermowell shaft and the process connection flange are not interconnected. For installation, the collar of the thermowell is fitted between two flanges; on the one hand it is fitted onto the thermowell and on the other hand it is bolted to the connection nozzle on the process side. Many different flange versions are available to secure the unit to the permanently installed nozzle flange. It is machined from solid bar stock.
The thermowell will be used in applications with high process requirements. The predominant industries are Oil & Gas and Petrochemical. The process connection flange is not welded on the thermowell stem but designed as collar flange. This special Vanstone thermowell design enables a wide variety of applications and is suitable for resistance and thermocouple thermometers.
Benefits
Solid thermowell, made of drilled bar stock material.Fulfillment of various, industry specific requirements with a standard product. Flexible selection of immersion length and thermowell geometry according to the process specifications. In accordance with Shell specification: S.38.113 rev.D and S.38.114 rev.DExact thermowell stress calculation ensuring safe plant operation. Vanstone design with outstanding cost effectiveness:Reuse of the flange if the thermowell has to be replaced, flexible selection of the flange material as well as reduced spare parts and storing concept.