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0.385" Bore Dia Threaded Lagging Extension Thermowells

Standard Threaded Thermowell for 3/8 Inch Diameter Elements

$120.56

Item# 1-385L-U101/2-304SS

Volume Discount Schedule

Quantity	Price each
1-9	$120.56
10-24	$114.53
25-99	$108.50
100-499	$102.48
500-999	$96.45
1000+	$90.42

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Lead Time ( If not in Stock): 3 weeks

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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 Diameter

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

Application:
Standard length, 3/8' stem, bimetal thermometers. #14 gage thermocouple elements. Armored liquid-in-glass test thermometers. Other temperature-sensing elements having .377 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 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”
Well Type	Material	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 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.
See 385S Thermowell Page for Pressure-Temperature Ratings

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