0.260" Bore Dia Threaded Heavy Duty Lagging Thermowells

Heavy Duty Threaded Thermowell for 1/4 Inch Diameter Elements

$88.87

Item# 3/4-260HL-U71/2-CS

Volume Discount Schedule

Quantity	Price each
1-9	$88.87
10-24	$84.43
25-99	$79.98
100-499	$75.54
500-999	$71.10
1000+	$66.65

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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 NPT Thread

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, 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”
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' - 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.

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Questions And Answers

What is the maximum pressure rating at 300F for this well?

Asked by: cvsmith87

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.

Answered by: Jane

Date published: 2019-04-22