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Thermowells are precise machined components, serving as protection for primary thermometers or temperature sensing elements, such as Thermocouples; Resistance thermometer bulbs; Bimetallic thermometers etc.

The proper design and construction of Thermowells for chemical plants, refineries and continuous process industries has now become an important aspect of instrumentation. 


STABLE.THERM
, Thermowells are designed and fabricated in a number of popular styles, sizes and materials for your selection for any application. They are offered machined from solid barstock or seamless pipe fabricated types -  built up from metal tubes plugged at one end.

All Thermowells are machined with extreme care and accuracy to obtain uniformity of wall thickness and shape. The outer surfaces are smooth finished and polished to eliminate tool grooves which could become stress concentration lines, which is specially dangerous in austenitic steel. Every finished Thermowell is pressure tested to ensure soundness of metal structure.

-:Some of the different type of Thermowells :-

Standard Threaded Thermowells 

Standard Lagging Extension Type

Standard Threaded Taper Thermowells

Heavy Duty Lagging Extension Type

Socket Weld Type Thermowells

Flanged Type Taper Thermowells

WHILE SELECTING A THERMOWELL FOR ANY APPLICATION THE  FOLLOWING CONSIDERATIONS ARE OF SIGNIFICANCE:-
MATERIAL OF THERMOWELL
MODE OF INSTALLATION
SIZE OF BORE
TAPER/STRAIGHT SHANKS
INSERTION LENGTH "U"
LAG LENGTH (DEAD LENGTH)

Some of the common specifications offered by us are detailed below :-

Type 

We offer Barstock, Built up, Socket Weld, Van Stone etc.

Connections 

Screwed, Flanged or suitable for Welding to process lines.

Maximum Immersion Length 

i) Barstock Type - Upto 600 mm
ii) Built up Type - Upto 4 meters.
iii) Socket Weld Type - Upto 600 mm
iv) Van Stone Type - Upto 600 mm

Material of Thermowells 

Conforming to ASTM A276 TP, 304, 304L, 316, 316L, 316Ti, 321 or Monel, Hastalloy & other special alloys etc.  Fabricated thermowells are made from pipes conforming to ASTM A.

Materials of Flanges 

Forged Carbon Steel ASTM - A105, A181. Forged Stainless   Steels - A182, F316, 316L, 316Ti, 321, A182, F1, F5, F11 etc. and other alloy steels.

Deep Drilling Facilities 

For Barstock, Socket Weld and Van Stone Type Thermowells are available with our ancillary Unit

Standards & Codes followed

Process Screwed Connection : API, BS, DIN, ANSI B2.1

Process Flanged Connection : ANSI B16.5 BS 1560, DIN, JIS.

Female Threads : NPT ( ANSI B2.1 ) / API.

TIG Welding : ASME Section 9 Welder qualification D. P. Check

Dimensional Tolerance : SAMA Standard, B. S. 2765- 1969.

 

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