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Test/Limited Space Thermowells For 0.260″ & 0.385″ Bore Dia

Original price was: $97.41.Current price is: $68.19.

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

External Thread

Material

Shank Diameter

Insertion Length

Internal Thread

Bore Diameter

Pressure Rating

Stem length/Probe Length

Clear

SKU: 1/2-385A-U10-304SS Categories: Accessories, Protection, Thermowells Tag: Omega Engineering

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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.

External Thread	1/2 in NPT, 1 in NPT, 3/4 in NPT
Material	304 Stainless Steel, 316 Stainless Steel, Brass, Carbon Steel
Shank Diameter	5/8 in, 1/2 in
Insertion Length	10 in, 12 in, 2 in, 4 in, 6 in, 8 in, 1 5/8 in
Internal Thread	1/4 in NPT, 1/2 in NPSM
Bore Diameter	0.385 in, 0.260 in
Pressure Rating	4120 PSI @ 70 F, 2810 PSI @ 70 F, 3160 PSI @ 70 F
Stem length/Probe Length	11 1/4 in, 13 1/4 in, 3 1/4 in, 5 1/4 in, 7 1/4 in, 9 1/4 in, 2 1/2 in
Pipe Size	Not Applicable
Flange Size	Not Applicable
Shank Style	Straight
Well Type	Threaded
Features	Not Applicable