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Standard Threaded Thermowell for 3-8 Inch Diameter Elements
SERIES 385L
PLACE ORDER - Available in Carbon Steel and Stainless Steel
- Standard Insertion Lengths from 2 1/2 to 19 1/2 Inches
- 3/4 Inch and 1 Inch External Diameter
Description
Description
Application:
Standard length, 3/8" stem, bimetal thermometers. #14gage thermocouple elements. Armored liquid-in-glasstest thermometers. Other temperature-sensingelements having .377 in. maximum diameter.
Connection Size:
3/4" NPT and 1" NPT are standard. Other thread sizesare available upon request.
Materials:
Brass (ASTM B-16); Carbon Steel (C-1018); StainlessSteel A.I.S.I. 304 & A.I.S.I. 316; Monel. Wells are alsoavailable in special materials; prices on request.
Series 385L—Lagging Extension Type
All dimensions in inches.
* NPSM internal pipe thread will accept both NPT and NPS male threads.
External Thread
P | Model No. | Lag. Ext.
T | Elem. Lgth.
A | Insert. Lgth.
U |
| 3/4" NPT | 3/4-385L-U 2 1/2
-U 4 1/2
-U 7 1/2
-U10 1/2
-U13 1/2
-U19 1/2 | 2
3
3
3
3
3 | 6
9
12
15
18
24 | 2 1/2
4 1/2
7 1/2
10 1/2
13 1/2
19 1/2 |
| 1" NPT | 1-385L-U 2 1/2
-U 4 1/2
-U 7 1/2
-U10 1/2
-U13 1/2
-U19 1/2 | 2
3
3
3
3
3 | 6
9
12
15
18
24 | 2 1/2
4 1/2
7 1/2
10 1/2
13 1/2
19 1/2 |
Maximum Fluid Velocity—feet per second
| Well Type | Material | Insertion Length – “U” |
| 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" - 385S
and
3/4" - 385L | Brass | 290 (145) | 150 (80) | 54.1 (48) | 27.6 | 16.7 | 11.1 | 8 | 6 |
| Carbon Steel | 326 (260) | 192 (144) | 69.5 | 35.4 | 20.5 | 14.3 | 10.3 | 7.7 |
| A.I.S.I. 304 & 316 | 349 (360) | 199 | 71.9 | 36.6 | 21.2 | 14.8 | 10.7 | 8 |
| Monel | 316 (320) | 189 (178) | 68.1 | 34.8 | 20.8 | 14 | 10 | 7.5 |
Where single values appear in the velocity tables, these may be considered safe for water, steam, air or gas. In the shorter insertionlengths, consideration is given to the velocity pressure effect of water flowing at higher velocities. The values in parentheses, therefore,represent safe values for water flow, while the unbracketed values may be used for steam, air, gas and similar density fluids.
See 385S Thermowell Page for Pressure-Temperature Ratings |
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