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Test/Limited Space Thermowells for 0.260" & 0.385" Bore Dia

General Purpose Test Wells and Limited Space Wells

$39.80

Item# 3/4-260A-U15/8-316SS

Volume Discount Schedule

Quantity	Price each
1-9	$39.80
10-24	$37.81
25-99	$35.82
100-499	$33.83
500-999	$31.84
1000+	$29.85

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Lead Time ( If not in Stock): 2 weeks

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385A ½ NPT External Thread
385A Cap and Chain included
260A ¾” NPT or 1” NPT External thread
260A Cap and Chain Sold separately

Data Sheet (PDF)

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External thread

Pipe size

Flange Size

Material

Shank Diameter

Insertion Length

Shank Style

Internal Thread

Bore Diameter

Pressure Rating

Well type

Features

Stem length/Probe Length

Product Specs

Product Details

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

Material	Insertion Length—“U”
Material	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

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.

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

* Material – 304 SS, Carbon Steel, etc.

Pressure-Temperature rating–lb per sq. inch

Material	Temperature — °F
Material	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*

* Material – 304 SS, Carbon Steel, etc.

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