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Heavy Duty Threaded Thermowell for 1-4 Inch Diameter Elements
SERIES 260HL
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 NPT Thread
Description
Description
Application:
Standard length, 1/4" bimetal thermometers. #20 gagethermocouple elements. Unarmored liquid-in-glass testthermometers. Other temperature-sensing elementshaving .252 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 260HL—Lagging Extension Type
All dimensions in inches.
* NPSM internal pipe thread will accept both NPT and NPS male threads.
| Ext. Th'd P | Model No. | Lag. Ext.
T | Elem. Lgth.
A | Insert. Lgth.
U | Shank Dia.
Q |
| 3/4" NPT | 3/4-260HL-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 | 7/8
7/8
7/8
7/8
7/8
7/8 |
| 1" NPT | 1-260HL-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 1/16
1 1/16
1 1/16
1 1/16
1 1/16
1 1/16 |
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" - 260H
and
3/4" - 260HL | Brass | 305 (97.5) | 93.8 (54.1) | 33.9 | 17.1 | 10.5 | 7 | 5 | 3.7 |
| Carbon Steel | 386 (175) | 180 (97.2) | 65.3 (58.3) | 33 | 20.1 | 13.4 | 9.6 | 7.1 |
| A.I.S.I. 304 & 316 | 440 (243) | 197 (135) | 71.2 | 36 | 22 | 14.7 | 0.5 | 7.8 |
| Monel | 354 (195) | 155 (108) | 56.1 | 28.4 | 17.3 | 11.6 | 7.5 | 5.6 |
1" - 260H
and
1" - 260HL | 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 |
| A.I.S.I. 304 & 316 | 490 (403) | 228 (225) | 82.5 | 41.8 | 25.5 | 17.1 | 12.2 | 9.1 |
| Monel | 410 (322) | 179 (178) | 65.1 | 33 | 20.1 | 13.5 | 8.7 | 6.5 |
| 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. |
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