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0.260" Bore Dia Threaded Heavy Duty Lagging Thermowells
Heavy Duty Threaded Thermowell for 1/4 Inch Diameter Elements
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-9 | $309.47 |
| 10-24 | $294.00 |
| 25-49 | $287.81 |
| 50-99 | $275.43 |
| 100-199 | $269.24 |
| 200+ | $263.05 |
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- 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
1-260HL-U191/2-304SS Model Options
View all modelsEdit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.
*Highlighted options are not compatible. Please select a different combination.
External Thread
Material
Shank Diameter
Insertion Length
Pressure Rating
Features
Stem length/Probe Length
Pipe Size
Flange Size
Shank Style
Internal Thread
Bore Diameter
Well Type
Application:
Standard length, 1/4' bimetal thermometers. #20 gage thermocouple elements. Unarmored liquid-in-glass test thermometers. Other temperature-sensing elements having .252 in. maximum diameter.
Connection Size:
3/4' NPT and 1' NPT are standard. Other thread sizes are available upon request.
Materials:
Brass (ASTM B-16), Carbon Steel (C-1018), Stainless Steel A.I.S.I. 304 & A.I.S.I. 316, Monel. Wells are also available in special materials; prices on request.
Series 260HL—Lagging Extension Type
All dimensions in inches.
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* NPSM internal pipe thread will accept both NPT and NPS male threads.
Maximum Fluid Velocity—feet per second
Standard length, 1/4' bimetal thermometers. #20 gage thermocouple elements. Unarmored liquid-in-glass test thermometers. Other temperature-sensing elements having .252 in. maximum diameter.
Connection Size:
3/4' NPT and 1' NPT are standard. Other thread sizes are available upon request.
Materials:
Brass (ASTM B-16), Carbon Steel (C-1018), Stainless Steel A.I.S.I. 304 & A.I.S.I. 316, Monel. Wells are also available 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 insertion lengths, 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. |
What is the maximum pressure rating at 300F for this well?
To better assist you with your application we would like to understand the material you are using for the thermowell and which pipe thread size you require, please contact our Tech Support so we can further assist you. Thank you.
Date published: 2019-04-22