• FM Approvals 1631
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FM Approvals 1631

  • Adjustable and Fixed Sprinkler Fittings 1/2 Inch through 1 inch Nominal Size
  • standard by FM Approvals, 10/01/2006
  • Publisher: FM Approvals

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This standard states FM Appro vals criteria for fixed and adjustable sprinkler fittings for use in wet pipe sprinkler systemes, with pendent sprinklers

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