• FM Approvals 1056

FM Approvals 1056

  • Sight Drains for Automatic Sprinkler Systems
  • standard by FM Approvals, 12/01/2010
  • Category: FM Approvals

$50.00 $25.00

This standard states FM Approvals criteria for sight drains for use in automatic sprinkler systems. They are used to allow visual verification that water is flowing through a pipe. Typical installations include main drain lines and in close proximity to inspector's test devices when discharge flow is not readily visible
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