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| Thermowell Baffles
Jacketed with PTFE
PTFE Jacketed Thermowell-baffles for inserting thermocouples below the
liquid level of corrosion mixtures are designed to withstand immersion
in all acids, except hydrofluoric, at temperatures to
350°F. Their
corrosion resistance and strength are also designed to provide long-life
and maintenance-free operation of both thermowells and vessels. They
are constructed of a PTFE jacketed steel pipe with a special tantalum
bulb swaged on the bottom end. Heat conductivity of 0.130
cal./cm2/°C/sec. is provided through the tantalum bulb
which combines good chemical resistance with high thermal conductivity.
Dimensional Data |
Size
(NPS) |
Flange
Size |
Gasket Seal
Dia. |
A |
Nominal O.D.* |
Max. Recommended
Unsupported Length** |
| 1/2 |
1 |
1 7/8 |
11/16 |
1 |
3 ft. |
| 1 |
1 1/2 |
2 3/4 |
13/16 |
1 15/32 |
4 ft. |
| 1 1/2 |
2 |
3 1/2 |
7/8 |
2 1/16 |
5 ft. |
| 2 |
3 |
4 3/8 |
1 1/16 |
2 9/16 |
6 ft. |
Notes: Maximum Length = 10 ft.
*Thermowells have oversize O.D. which will not fit directly into
standard size vessel nozzles. By selecting a smaller size pipe or a special
PSI reducing flange, the correct fit can be achieved.
**Recommended maximum length for mild agitation is shown as a general
guide for liquids having about the same density and viscosity as water.
For longer lengths or more severe operating loads (density, viscosity
and velocity of fluid at the pipe), a larger size or internal bracing
should be employed. Exceeding the maximum recommended service temperature
and/or pressure or maximum recommended unsupported length can result
in premature failure and possible personnel and equipment hazard. |
PSI © Copyright
Crane Co. All rights reserved.
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