You are here: Home » Products » Temperature » VSA

EMCO Thermowell type VSA for sandwitch mounting between flanges

Principle: 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.

Images & drawings

Construction
Material
AISI 316, 22Cr Duplex, 25Cr Duplex, Monel, 6Mo, Titanium, Hastelloy, and other exotic materials on request
Connection
Between ANSI/ASME flanges
Size
1", 1 1/2", 2"
Pressure rating
150 lbs - 2500 lbs
Flange facing
RF with stock or smooth finish or RTJ
Bore
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
Accessories
Plug and chain
Lap joint flange.
Pt 100 and thermocouple temperature sensors
Surface treatment possible (PTFE)