The Globe GL Series Concealed Pendent Sprinkler offers the ultimate in low profile, aesthetically pleasing appearance. All that is seen at the ceiling is a 3 5/16" diameter ceiling plate color finished to match the specifier's exact requirements. The Sprinkler is available with 1/8" adjustment and a low profile cover plate assembly. The GL Series Concealed Sprinkler may be virtually invisible as it does not interrupt the "smooth flow" of the ceiling. Globe's Concealed Sprinkler utilizes its frangible glass ampule type sprinkler which is located above the ceiling and concealed from view by the ceiling plate. The plate is soldered to the sprinkler special upper support assembly in three places. Upon the application of sufficient heat, the plate falls to the floor exposing the pendent spray sprinkler. At the ampule's rated temperature, the sprinkler opens discharging water onto the floor in its required and approved distribution pattern.


A special spring is attached to the pendent sprinkler deflector that serves to provide a constant tension against the ceiling plate. This feature virtually ensures freedom from environmental vibration problems.


The heart of Globe's GL Series sprinkler proven actuating assembly is a hermetically sealed frangible glass ampule that contains a precisely measured amount of fluid. When heat is absorbed, the liquid within the bulb expands increasing the internal pressure. At the prescribed temperature the internal pressure within the ampule exceeds the strength of the glass causing the glass to shatter. This results in water discharge which is distributed in an approved pattern.


  • See reverse side for Approvals and Specifications.
    • Temperature Ratings -
      - 135°F (57°C) Sprinkler, 135°F (57°C) Cover Plate;
      - 155°F (68°C) Sprinkler, 135°F (57°C) Cover Plate;
      - 155°F (68°C) Sprinkler, 155°F (68°C) Cover Plate;
      - 175°F (79°C) Sprinkler, 155°F (68°C) Cover Plate;
      - 200°F (93°C) Sprinkler, 155°F (68°C) Cover Plate.
  • Water Working Pressure Rating - 175 psi (12 Bars).
  • Factory tested hydrostatically to 500 psi (34 Bars).
  • Maximum low temperature glass bulb rating is -67°F (-55°C).
  • Frame - bronze
  • Deflector - brass
  • Screw - brass
  • Bulb seat - copper
  • Spring - nickel alloy
  • Seal - teflon
  • Bulb - glass with glycerin solution, 5mm size.
  • Cover Plate - brass
  • Upper Escutcheon Assembly - steel