UL Quick Response
FM Standard Response
½" (13mm) Cover plate Adjustment
Features
1. Flat cover plate with threaded attachment.
2. Solid or perforated cover plate available in chrome
and white as Standard Finishes.
Also available in a wide variety of Special
Application Finishes.
3. Available in Ordinary or Intermediate temperature
rating.
4. Sprinkler available in lengths from 4
(108mm) to 48 inches (1219mm) in
(6.35mm) increments (see Fig. 1).
Approvals & Listings
1. Listed by Underwriters Laboratories and Certified for
Canada (cULus) as a Quick-response sprinkler for Light
and Ordinary Hazard occupancies. UL Guide Number
VNIV, Sprinklers, Automatic and Open.
2. FM Approved as a Standard-response sprinkler.
Patents
The Model G5-56 Dry is covered by the following patents:
U.S. 5,775,431
U.S. 5,967,240
Application
The Model G5-56 Dry is a cULus Listed Quick Response
Concealed Dry Pendent sprinkler intended for use in accor-
dance with NFPA 13. The Model G5-56 Dry sprinkler is cULus
Listed for use in Light and Ordinary Hazard occupancies.
The Model G5-56 Dry is FM Approved as a Standard Re-
sponse Concealed Dry Pendent sprinkler intended for use in
accordance with FM Loss Prevention Data Sheet 2.0.
Product Description
The Reliable Model G5-56 Dry sprinkler is a Dry Pendent
sprinkler, where the sealing washer is located at the inlet end
of the sprinkler assembly. The position of the sealing washer
is controlled by a fusible element at the opposite end of the
sprinkler assembly. The sprinkler is installed with the fusible
element at the ceiling of a protected space that may be sub-
ject to freezing temperatures and the inlet orifice located in a
heated area above the ceiling. Operation of the fusible ele-
ment allows the sealing washer to move out of the inlet orifice
admitting water from the supply piping. The sprinkler uses a
Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Model G5-56 Dry (SIN RA5114)
K5.6 (80 metric)
Concealed Dry Pendent
Sprinkler
inches
¼
inch
¼-
fast-response fusible element with an Ordinary, 165°F (74°C),
or Intermediate, 212°F (100°C), temperature classification.
The Model G5-56 Dry sprinkler has a dropdown deflector
design that allows the sprinkler to be recessed into the ceiling
and concealed by a flat cover plate. The cover plate assembly
threads into the sprinkler's cup and provides ½-inch (13mm)
of cover adjustment. The cover plate assembly consists of a
flat cover plate that is attached to the skirt using either 135°F
(57°C) or 165°F (74°C) temperature rated solder. The 135°F
(57°C) cover plates are for use with Ordinary temperature clas-
sification sprinklers and the 165° (74°C) cover plates are for
use with Intermediate temperature classification sprinklers.
The Model G5-56 Dry sprinkler is available in lengths rang-
ing from 4¼ inches (108mm) to 48 inches (1219mm) in ¼-inch
(6.35mm) increments (see Fig. 1). The length of the sprinkler
must be selected to provide the Exposed Minimum Barrel
Length in a Heated Area required by Fig. 2.
The Model G5-56 Dry sprinkler is available with 1-inch NPT
or ISO 7-1 R1 threaded inlet fittings. The standard inlet fitting in-
cludes a long inlet designed to minimize the potential for water,
scale, and sediment to accumulate on the sprinkler inlet in wet-
and dry-pipe sprinkler systems. For wet-pipe sprinkler system
applications where the standard inlet interferes with installation
into existing plastic pipe fittings, an inlet fitting is available with
a short ("PL") inlet. See Fig. 3 for further information.
Model G5-56 Dry Sprinkler
Bulletin 051
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