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Dresser Style 90 compression fittings join steel pipe to steel pipe with a pressure seal. Each fitting has a cast iron or forged steel body, two resilient gaskets, two self-centering steel retainer cups and two heavy end nuts, and ships assembled. Millions are in service on natural gas service lines.
Application: Natural gas service lines, steel to steel. Dresser also lists Style 90 seal-only fittings in its water and industrial price book.
Included: the fitting, assembled, with gaskets, retainer cups and end nuts.
Pipe prepared before install: clean, round pipe where the gaskets seat, free of gouges and loose scale.
Anchoring, by others: the fitting seals but does not restrain the pipe.
Covered for 12 months from the date of purchase under Dresser’s published warranty terms.
150 PSI MAOP standard; Dresser builds other pressures on request. The fitting provides a pressure seal only. The allowable pressure on a job also depends on the pipe, its condition, the service and the workmanship.
| Body | Cast iron or forged steel |
| Gaskets | Plain, armored or insulating, per the option selected |
| Retainer cups | Steel |
| End nuts | High-grade iron |
Source: Dresser Style 90 seal-only gas service fittings brochure.
Source: Dresser Gas Product Selection Guide (NGS-DPS-015), product warnings.
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