Reliable G4 User manual

The Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523
Bulletin 121 Rev. K
Bulletin 121 Rev. K
Model G4 Concealed
Automatic Sprinkler
The Concealer®
A Concealed Sprinkler
With ½” (13mm) or
1½” (38mm) Adjustment
Features
1. Cover plate assembly attachment (Plain
or Perforated) with ½” (13mm) adjustment.
Does not require clips or springs.
2. 1½” (38mm) Total adjustment provided by
adjustable inlet versions.
3. Adjustable inlet version available with either
1” NPT male or female threads eliminating
costly reducing coupling.
4. Smooth aesthetic ceiling profile.
5. Available in white or other color painted or
brass, chrome, or black plated finishes.
6. Ordinary and intermediate temperature
ratings.
7. Multiple orifices for design flexibility.
Approvals & Listings
1. Underwriters Laboratories Inc. (UL)
2. Underwriters Laboratories of Canada. (ULC)
3. N.Y.C. BS&A No. 587-75-SA.
Note: Approvals are for light and ordinary hazard, except for small
orifice sprinklers which are limited to light hazard occupancies.
The cup and skirt are fabricated from plated steel and are in-
tended for interior non corrosive applications.
U.S. Patent No. 4,880,063.
The Concealer®is designed for use where aesthetic ap-
pearance is important. Offices, hospitals, motels and restau-
rants are but a few of the applications where it can be used.
It is available in different orifice sizes allowing the designer
to optimize system performance, thereby achieving a most
efficient installation.
The Concealer®can eliminate the need for precise cutting
of drop nipples. The cover plate assembly can be adjusted
without tools so it mates accurately with the ceiling. The fire
protection system need not be shut down to adjust or remove
the cover plate assembly.
Product Description
The Reliable Model G4 Concealer®standard response
uses the proven Model G fusible element in a standard style
sprinkler frame with a drop-down deflector. This assembly is
recessed into the ceiling and concealed by a flat cover plate.
This threaded engagement provides ½” (13mm) of cover ad-
justment. The flat cover plate is attached to the skirt using
an ordinary temperature classification solder. This results in
a strong cover plate assembly with an ordinary temperature
rating, and an intermediate temperature sprinkler which can
be installed in 150°F (66°C) environments. When the ceiling
temperature rises, the solder holding the cover plate to the
skirt melts, the flat cover plate released thus exposing the
sprinkler inside to the rising ambient temperature.
The subsequent fusing of the sprinkler element opens the
waterway and causes the deflector to drop into position to
distribute the discharging water. Any secure engagement of
the threads between the cover plate and cup will assure that
the drop–down deflector is properly located below the ceiling
when a sprinkler operates.
Application
The Reliable Model G4 Conceal-
er®is the most versatile concealed
sprinkler available. It provides the
best form of fire protection while
offering an attractive appearance
and ½” (13mm) of cover adjustment for ease of instal-
lation. The adjustable 1” NPT inlet versions have 1½”
(38mm) of total adjustment and also eliminates the need
for a reducing coupling. The small diameter cover plate
assembly is easily attached and blends into the ceiling,
concealing the most dependable fire protection available,
an automatic sprinkler system.

The Reliable Automatic Sprinkler Co., Inc.
[phone] Sales Offices
[phone] Sales Fax
[phone] Corporate Offices
www.reliablesprinkler.com Internet Address
Manufactured by
Recycled
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Revision lines indicate updated or new data.
EG. Printed in U.S.A 05/12 P/N 9999970014
The equipment presented in this bulletin is to be installed in accordance with the latest published Standards of the National Fire Protection Association, Factory
Mutual Research Corporation, or other similar organizations and also with the provisions of governmental codes or ordinances whenever applicable.
Productsmanufactured and distributed by Reliable have been protecting life and property for over 90 years, and are installed and serviced by the most highly
qualified and reputable sprinkler contractors located throughout the United States, Canada and foreign countries.
Installation
Do not install The Concealer®in ceilings which have posi-
tive pressure in the space in the space above.
After a 25/8inch diameter hole is cut in the ceiling, the sprin-
kler is to be installed with the Model G4 Wrench. The wrench
has drive tangs which insert into cup slots. When installing
a sprinkler the wrench is first positioned into the sprinkler/
cup assembly until the wrench tangs engage drive slots in
the top of the cup (there are two sets of mating drive slots in
the cup). The sprinkler is then tightened into the pipe fitting.
When inserting or removing the wrench from the sprinkler/
cup assembly care should be taken to prevent damage to
the sprinkler. DO NOT WRENCH ON ANY OTHER PART OF
THE SPRINKLER/CUP ASSEMBLY.
The adjustable inlet versions are similar to the standard
Model G4 except that an addition 1” (25mm) of adjustment is
provided by means of a telescoping inlet section that threads
in or out of a stationary coupling reducer (either 1 male or 1
female) as shown in Fig. 2 or Fig. 3. These sprinklers must be
installed before the ceiling is in place, by wrenching on only
the coupling reducer hex flats. After the ceiling has been in-
stalled with holes for the sprinkler, each telescoping inlet sec-
tion is to be adjusted with the G4 Wrench. Install the cover
plate assembly by hand turning it clockwise until it is tight
against the ceiling.
Maintenance
The Model G4 Concealer®should be inspected quarterly
and the sprinkler system maintained in accordance with
NFPA 25. Do not clean sprinklers with soap and water, am-
monia or any other cleaning fluids. Remove any sprinkler that
has been painted (other than factory applied) or damaged in
any way. A stock of spare sprinklers should be maintained
Temperature Ratings
Classification Sprinkler Cover Plate Max. Ambient
Temp.
Ordinary 135°F/57°C 135°F/57°C 100°F/38°C
Ordinary 165°F/74°C 135°F/57°C 100°F/38°C
Ordinary 165°F/74°C 165°F/74°C 150°F/66°C
Intermediate 212°F/100°C 165°F/74°C 150°F/66°C
Installation Data
Sprinkler
Inlet
Total
Adjustment
Nominal
Orifice
Nominal
K Factor Thread Approvals
Sprinkler
Identification
Number (SIN)
US Metric
Non–Adjustable ½” (13mm) ½” (15mm) 5.6 80 ½” NPT (R½) 1,2,3 R2115
Non–Adjustable ½” (13mm) 7
/
16”(11mm) 4.2 60 ½” NPT (R½) 1,2,3 R2113
Non–Adjustable ½” (13mm) 3
/
8” (10mm) 2.8 40 ½” NPT (R½) 1,2,3 R2111
Adjustable 1½” (38mm) ½” (15mm) 5.6 80 1” NPT Male or Female 1,2,3 R2118
Adjustable 1½” (38mm) 7
/
16” (11mm) 4.2 60 1” NPT Male or Female 1,2,3 R2113
Adjustable 1½” (38mm) 3
/
8” (10mm) 2.8 40 1” NPT Male or Female 1,2,3 R2112
Cover Plate Finishes(1)
Standard Finishes
Chrome
White Paint
Special Application
Finishes(2)
Bright Brass
Finished Bronze
Black Plating
Black Paint
Off White
Satin Chrome
(1) Other finishes and colors
are available on special
order. Consult factory for
details. Coverplate custom
paint is semi-gloss, unless
specified otherwise.
(2) For the perforated style
coverplate, consult factory
for availability on these
and other custom finishes.
Note: Paint or any other coat-
ings applied over the factory
finish will void all approvals
and warranties.
Installation Wrench
Model G4 Sprinkler Wrench
to allow quick replacement of
damaged or operated sprin-
klers. Prior to installation, sprin-
klers should be maintained in
the original cartons and pack-
aging to minimize the potential
for damage to sprinklers that
would cause improper opera-
tion or non-operation.
Ordering Information
1. Sprinkler Model
2. Temperature Rating
3. Nominal Orifice
4. Flat Cover Plate Finish
5. Inlet Type
Note: Unless otherwise specified,
the 165°F (74°C) sprinkler will
be provided with the 165°F
(74°C) cover.
Fig. 1 - ½” NPT (R½) Non-Adjustable Inlet Fig. 2 - 1” NPT Male-Adjustable Inlet Fig. 3 - 1” NPT Female-Adjustable Inlet