HEAVY DUTY THREADED THEROMOWELLS FOR 1/4" DIAMETER ELEMENTS

Model 260TWH - Heavy Duty, Model 260TWHE - Heavy Duty with Lagging Extension
Please Note:
Tel-Tru data on Thermowell performance is from industry standards in common use by design engineers and other manufacturers. Tel-Tru is not responsible for errors resulting from omission, transmission, transposition, printing, or interpretation of such data.

PRESSURE - TEMPERATURE RATING - PSI
Temperature - °F
Material 70° 200° 400° 600° 800° 1000° 1200°
Brass 5300 4750 1100 - - - -
Carbon Steel 5950 5750 5450 5250 4000 1750 -
304SS 7800 7050 6400 6150 6000 5190 1875
316SS 7800 7800 7250 7100 6950 5800 2720
Monel 7450 6850 6150 6100 5490 1750 -

MAXIMUM FLUID VELOCITY - FEET PER SECOND
Insertion Length - "U"
Well Type Material 2-1/2 4-1/2 7-1/2 10-1/2 13-1/2 16-1/2 19-1/2 22-1/2
3/4"-260TWH
and
3/4"-260TWHE
Brass 305
(97.5)
93.8
(54.1)
33.9 17.1 10.5 7.0 5.0 3.7
Carbon Steel 386
(175)
180
(97.2)
65.3
(58.3)
33.0 20.1 13.4 9.6 7.1
304SS; 316SS 440
(243)
197
(135)
71.2 36.0 22.0 14.7 10.5 7.8
Monel 354
(195)
155
(108)
56.1 28.4 17.3 11.6 7.5 5.6
1"-260TWH
and
1"-260TWHE
Brass 354
(161)
108
(89.5)
39.4 19.8 12.2 8.1 5.8 4.3
Carbon Steel 448
(289)
209
(161)
75.7 38.4 23.3 15.5 11.1 8.2
304SS; 316SS 490
(403)
228
(225)
82.5 41.8 25.5 17.1 12.2 9.1
Monel 410
(322)
179
(178)
65.1 33.0 20.1 13.5 8.7 6.5
Note: Values are for steam, air, gas and similar density.
Values shown in parenthesis are for water flow only.
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