Title: TFP510_06_2015.pdf
PLUG WITH SEALING ASSEMBLYINLETYOKESPRINGINLET BANDWATER TUBECASINGGUIDE TUBEINSERTFRAMEBULB SEATVENT HOLE3 mm BULBDEFLECTORCOMPRESSION SCREWFIGURE 2 SERIES DS-1, 1 INCH NPT AND ISO 7-R 1 DRY-TYPE SPRINKLER ASSEMBLYOperation When the TYCO Series DS-1 Dry-Type Sprinklers, 5.6K Pendent, Upright, and Horizontal Sidewall, Quick Response (3 mm bulb) and Standard Coverage are in service, water is prevented from entering the assembly by the Plug with Sealing Assembly in the Inlet of the Sprinkler. See Figures 1 and 2.The glass bulb contains a fluid that expands when ex posed to heat. When the rated tem perature is reached, the fluid expands sufficiently to shatter the glass Bulb, and the Bulb Seat is released.