DEC 2017 GFS-430 (Formerly A-75)
STANDARD RESPONSE
AUTOMATIC SPRINKLERS
GL SERIES
INTERMEDIATE LEVEL
UPRIGHT PENDENT
DESCRIPTION AND OPERATION
SPRINKLER TEMPERATURE RATING/CLASSIFICATION and COLOR CODING
STANDARD RESPONSE
PENDENT
STANDARD RESPONSE
UPRIGHT
SERIES GL-SR/ST
SERIES GL-SR/ST
The Globe Series GL-SR/ST/INT Inter-
mediate Level Sprinklers are primarily
designed for use in rack storage sprinkler systems, where their
thermosensitive elements must be shielded from the water spray of
higher elevation sprinklers which could operate ear-
lier during a fi re. The Globe Series GL-SR/ST/INT
Sprinkler is a low profi le yet durable design which
utilizes a frangible glass ampule as the thermosensitive element.
The Globe Intermediate Level Sprinklers are available in either
upright or pendent styles, with 5.6, 8.0*, 8.0, or 11.2 K-factor orifi ces,
in several temperature ratings and with various fi nishes to meet
customer requirements. The Upright style is factory fi tted with a water
shield having a 3 3/4” diameter. The water shield for the pendent
may be either factory fi tted or installed in the fi eld (see shield part
numbers below). Either style can be provided with sprinkler guards
for use where mechanical injury might be expected. The Upright style
may be provided with a one piece head guard and shield; when or-
dered as such (order as GL5661, GL8161, GL8164, or GL1167 with
sprinkler guard part number 321406 (red) or 321407 (chrome)).
The heart of Globe’s Series GL-SR Sprinkler proven actuating
assembly is a hermetically sealed frangible glass ampule that contains
a precisely measured amount of fl uid. When heat is absorbed, the liq-
uid within the bulb expands increasing the internal pressure. At thepre-
scribed 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 depending
upon the defl ector style used.
TECHNICAL DATA
• See reverse side for Approvals and Specifi cations.
• Temperature Ratings -
135°F (57°C), 155°F (68°C), 175°F (79°C), 200°F (93°C), 286°F (141°C)
• 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 • Defl ector - brass • Screw - brass
• Bulb seat - copper • Spring - nickel alloy • Seal - tefl on
• Bulb - glass with glycerin solution, 5mm size
• Shield - steel - 3 3/4” diameter
CLASSIFICATION
AVAILABLE SPRINKLER
TEMPERATURES
BULB COLOR
N.F.P.A. MAXIMUM CEILING
TEMPERATURE
ORDINARY
INTERMEDIATE
HIGH
135°F/155°F
175°F/200°F
286°F
57°C/68°C
79°C/93°C
141°C
ORANGE/RED
YELLOW/GREEN
BLUE
100°F
150°F
225°F
38°C
66°C
107°C
SHIELD PART NUMBERS
1/2"NPT 3/4"NPT
325706 325707
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