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EMCO Thermowell Type VSA for Sandwich Mounting Between Flanges


EMCO thermowell type VSA, known as Van Stone type, is used for mechanical and corrosive protection of temperature sensing instruments such as bimetal thermometers, thermocouples, and RTD’s with a maximum outer diameter of 6.4 and 9.5 mm (1/4″and 3/8″). The thermowell is sandwiched between a loose lap joint flange and the flanged nozzle (boss) on the process equipment.



AISI 316, 22Cr Duplex, 25Cr Duplex, Monel, 6Mo, Titanium, Hastelloy, and other exotic materials on request
Between ANSI/ASME flanges
1", 1 1/2", 2"
Pressure rating
150 lbs - 2500 lbs
Flange facing
RF with stock or smooth finish or RTJ
7, 10 mm (0.276", 0.394")
Well form
Straight, stepped straight, taper
Tip thickness
6.4 mm (0.25")
Instrument connection
½" NPSM. This thread accepts both NPT and NPS external threads


Plug and chain
Lap joint flange.
Pt 100 and thermocouple temperature sensors
Surface treatment possible (PTFE)

Additional Images and Drawings

Who to contact?

Kasper Jensen
Sales Manager

(Level, Temperature & Valves)