Test/Limited Space Thermowells for 0.260" & 0.385" Bore Dia
General Purpose Test Wells and Limited Space Wells
Volume discounts available
Volume Discount Schedule
| Quantity | Price each |
|---|---|
| 1-9 | $89.20 |
| 10-24 | $84.74 |
| 25-99 | $80.28 |
| 100-499 | $75.82 |
| 500-999 | $71.36 |
| 1000+ | $66.90 |
Added to Your Shopping Cart
Configuration complete.
Please add to cart to keep it or exit the configuration
Please add to cart to keep it or exit the configuration
Failed to Save Configurations, Click on Configure Button Start Again
- 385A ½ NPT External Thread
- 385A Cap and Chain included
- 260A ¾” NPT or 1” NPT External thread
- 260A Cap and Chain Sold separately
1/2-385A-U10-304SS 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
Internal Thread
Bore Diameter
Pressure Rating
Stem length/Probe Length
Pipe Size
Flange Size
Shank Style
Well Type
Features
Series 385A
Application:
Armored liquid-in-glass test thermometers. #14 gage test thermocouples. Bimetal test thermometers.
Connection Size:
1/2' NPT external thread is standard.
Lagging Extension:
When extra head length is required to extend through insulation, 2 1/2' lagging extension is standard.
Materials:
Brass (ASTM B-16), Carbon Steel (C-1018), A.I.S.I. 304 & A.I.S.I. 316 Stainless Steel. Other materials available on request.
Cap and Chain: Captive plug & chain is furnished on all wells as standard.
Series 385A—General Use
![]()
All dimensions in inches
Velocity Rating – feet per second
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.
* Material – 304 SS, Carbon Steel, etc.
Pressure-Temperature rating–lb per sq. inch
Series 260A
Application:
Used where short insertion length is necessary as in short legs of tees, etc. This well also fits the 2 1/2' length bimetal thermometer with 1/4' stem diameter.
Connection Size:
3/4' NPT and 1' NPT external thread.
Standard Materials:
Brass (ASTM B-16), Carbon Steel (C-1020), A.I.S.I. 304 & A.I.S.I. 316, Monel.
Series 260A
![]()
All dimensions in inches
* Material – 304 SS, Carbon Steel, etc.
Application:
Armored liquid-in-glass test thermometers. #14 gage test thermocouples. Bimetal test thermometers.
Connection Size:
1/2' NPT external thread is standard.
Lagging Extension:
When extra head length is required to extend through insulation, 2 1/2' lagging extension is standard.
Materials:
Brass (ASTM B-16), Carbon Steel (C-1018), A.I.S.I. 304 & A.I.S.I. 316 Stainless Steel. Other materials available on request.
Cap and Chain: Captive plug & chain is furnished on all wells as standard.
Series 385A—General Use
All dimensions in inches
Velocity Rating – feet per second
| Material | Insertion Length—“U” | |||||
| 2 | 4 | 6 | 8 | 10 | 12 | |
| Brass | 362 (74) | 115 (37) | 51.4 (24.7) | 28.9 (18.5) | 18.5 (14.8) | 12.8 (12.3) |
| Carbon Steel | 422 (156) | 155 (78) | 69.1 (52.1) | 38.9 | 24.9 | 17.3 |
| A.I.S.I. 304 & 316 | 450 (223) | 162 (112) | 72.2 | 40.6 | 26 | 18.1 |
| Monel | 382 (147) | 145 (73.8) | 64.7 (49.2) | 36.4 | 23.3 | 16.1 |
| Model Number | Insert. Lgth. U | Stem. Lgth. A |
| 1/2-385A-U 2* -U 4* -U 6* -U 8* -U10* -U12* | 2 4 6 8 10 12 | 3 1/4 5 1/4 7 1/4 9 1/4 11 1/4 13 1/4 |
Pressure-Temperature rating–lb per sq. inch
| Material | Temperature — °F | ||||||
| 70° | 200° | 400° | 600° | 800° | 1000° | 1200° | |
| Brass | 2810 | 2530 | 440 | – | – | – | – |
| Carbon Steel | 3160 | 3040 | 2900 | 2770 | 2110 | 920 | – |
| A.I.S.I. 304 | 4120 | 3740 | 3400 | 3280 | 3180 | 2750 | 990 |
| A.I.S.I. 316 | 4120 | 4120 | 3850 | 3760 | 3680 | 3080 | 1490 |
Series 260A
Application:
Used where short insertion length is necessary as in short legs of tees, etc. This well also fits the 2 1/2' length bimetal thermometer with 1/4' stem diameter.
Connection Size:
3/4' NPT and 1' NPT external thread.
Standard Materials:
Brass (ASTM B-16), Carbon Steel (C-1020), A.I.S.I. 304 & A.I.S.I. 316, Monel.
Series 260A
All dimensions in inches
| External Thread P | Model Number |
| 3/4'NPT 1'NPT | 3/4-260A-U15/8* 1-260A-U15/8* |
