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Series 260F and 385F
Flanged Thermowells for 1⁄4"
and 3⁄8" Diameter Elements
Application:
260F series fits standard length 1⁄4" diameter elements.
385F series fits standard length 3⁄8" diameter elements.
Flange Sizes:
1 and 11⁄2" flanges in all facings and pressure ratings
are standard. Other sizes are available on application.
Materials:
Flanges and wells made of Carbon Steel (C-1018),
A.I.S.I. 304, A.I.S.I. 316, and Monel® are available for
quick delivery. Other materials are available.
Protective Coatings for Thermowells:
• Resist corrosion • For chemical baths
• Color-coded sensors for process control
• Available in PFA, Epoxy and other materials.
Consult Sales Department for complete information
Welding:
Primary weld is “J” groove type; secondary weld is
45° bevel groove. Welding is performed by certified
welders using inert gas shielded arc.
Cap and Chain Options: add suffix “-CC” to the end of
the model number, for an additional cost.
Series 260F and 385F
1
1
/
2
NPSM
1
/
1
4
DIA.
/
4
†
U INSERTION LENGTH2
FLANGE SIZE & FACING
AS REQUIRED
WELD
†
Q DIA.
NPSM internal pipe thread
will accept both NPT and
NPS male threads.
0.002
B ±
BORE
Dimensions: inches
To Order Visit omega.com/series_260f_385f for Pricing and Details
A STEM LENGTH
1
/
4
Metric Models
Available!
See omega.com
Stem Insertion Shank Bore
Length Length Diameter Diameter
Model Number A U Q B
260F-U2-(*) 4 2
260F-U4-(*) 6 4
260F-U7-(*) 9 7
260F-U10-(*) 12 10
260F-U13 -(*) 15 13
260F-U16 -(*) 18 16
260F-U22
385F-U2
385F-U4
385F-U7
385F-U10
385F-U13
385F-U16
385F-U22
Specify material type “304SS” for 304 stainless steel, “316SS” for 316 stainless steel, or “CS” for carbon steel.
*
Ordering Example: 260F-U4-316SS-11/2-300RF-316SS, 316 SS thermowell with a 0.260" ID, 4" insertion length,
6" stem length, with a 11⁄2", 300 psi rated 316 SS raised face flange.
For Assistance in Choosing Head and Well Assemblies, See omega.com. These wells are compatible with
OMEGA® NB1, NB2; PR-12, PR-14, and NPT-style probes, as well as DialTemp™ Thermometers.
-(*) 24 22
-(*) 4 2
-(*)
-(*)
9 7
-(*)
-(*)
-(*)
-(*)
6 4
12 10
15 13
18 16
24 22
3
⁄4 0.260
3
⁄4 0.260
3
⁄4 0.260
3
⁄4 0.260
3
⁄4 0.260
3
⁄4 0.260
3
⁄4 0.260
7
⁄8
0.385
7
⁄8
0.385
7
⁄8
0.385
7
⁄8
0.385
7
⁄8
0.385
7
⁄8
0.385
7
⁄8
0.385
Shown
smaller
than
actual
size.
B
Standard Flanges
Rating Size Model Number
lb/in2 (inch) (Flange Suffix)
1 1-150RF (or FF)
150 11⁄2 11⁄2-150RF (or FF)-(
2 2-150RF (or FF)-(
1 1-300RF (or FF)-(
300 11⁄2 11⁄2-300RF (or FF)-(
2 2-300RF (or FF)-(
Specify material type “304SS” for 304 stainless steel, “316SS”
*
for 316 stainless steel, or “CS” for carbon steel.
To Order: Add completed model number as a suffix to the thermowells
featured in the chart above. It is recommended to consult factory when
ordering flanged thermowells.
-(*)
)
*
)
*
)
*
)
*
)
*
Wells and flanges are made
of the same material.
See omega.com for
Maximum Fluid Velocity.
B-30
Consult factory for recommendations
as to pressure and temperature
ratings for flanged thermowells.
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