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UniSeal
Stainless Steel Pipe Couplings
Couplings Catalog Pages (2 pgs./72KB)
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UniSeal Pipe Coupling
The UniSeal Pipe Coupling has successfully solved frequent leakage,
intensive maintenance and stocking difficulties associated with ground
joint pipe unions.
The UniSeal Pipe Coupling is a modified stainless steel pipe union
which utilizes a spiral-wound gasket to provide a leak-tight joint. This
design, similar in principle to flange joints, has been proven in the
field for many years. Because the joint seal is formed by the
replaceable gasket (not a ground joint finish), failures caused by poor
mating surfaces are eliminated. Components may be stocked and replaced
individually because mated parts are not required for sealing.
Features:
 | No losses, no leaks: no loss of expensive cryogenic liquids, cold
gas vapors or process fluid. A spiral-wound gasket ensures a
leak-tight seal. |
| Lower Maintenance & Labor Costs:
 | Replacement of the union housing is eliminated. Only a change of
gasket is required when the UniSeal Pipe Coupling is disassembled. |
| No need to spring the pipe during make-up or disassembly. |
| It is less costly to make and break than flanges. |
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| Lower Inventory Costs:
| Only a few UniSeal Pipe Couplings and gasket kits in each size
are required to backup installations. |
| One UniSeal satisfies all pressure series of flanges in pipe
sizes 1/2" to 2". |
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| Ease of Installation:
| The gasket is held firmly in place with a patented retainer. |
| There is no danger of damaging the seal during installation as
it is fully protected from over-torquing. |
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| Welded Piping Systems:
| With the gasket removed while welding the coupling into the
piping, the danger of damaging the seal is eliminated. |
| Costly removal of sections of pipe to replace leaky unions is
eliminated. |
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| Component Interchangeability:
| All components of the UniSeal Pipe Couplings, in each size
class, are fully interchangeable. |
| End connections can be socket weld, threaded or a combination of
both. |
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