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Construction:
Removable bundle, straight tube, full floating head outside packed skirted floated tubesheet, ASME and TEMA "B", "C" or "R" construction. |
Limitations: |
- Maximum shell side design pressures are generally limited to 150 PSIG, since additional packing rings would be required, making the stuffing box deeper and more costly.
- Gases, except for low pressure air and nitrogen, should be kept on the tube side to prevent possible leaking at the packed joint.
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Application:
Recommended for hydrogen, oxygen, methane, ammonia and all other hydrocarbon gases. Also for gases with low molecular weights. |
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Advantages:
Floating end allows for differential thermal expansion between the shell side and tube side.
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General Specifications:
Shell side: Sizes from 6" to 30" dia.
Materials: Carbon steel is standard, alloys are available.
Pressures: 150 PSIG standard.
Temperatures: 250 Degs F standard,
up to 375 Degs F available.
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- Well suited to higher pressure, gas-in-the-tube units, as well as low M.W. gas units, since the floating tubesheet is packed only against the shell side fluid.
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- Intermixing of shell and tube fluids is eliminated since shell side only is packed, unless a tube splits or a tube joint leaks which, of course, is possible with any design.
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Tube side: Tube sizes 3/8" OD to 1" OD.
Materials: Admiralty and copper alloys, carbon
stainless steel, monel and others.
Pressures: 150 PSIG to 3000 PSIG.
Temperatures: 300 Degs F standard, up to 600
Degs F available.
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- Because of the skirt, the OTL is much greater than other full floating head designs with similar advantages, thus, providing maximum heat transfer surface and high thermal efficiency.
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- Provides multi-pass tube side designs.
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- Straight tubes can be easily cleaned by rodding.
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- Tube bundle can be easily removed for cleaning shell side, repairing or replacing.
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