The Reliable Automatic Sprinkler Co., Inc.,
103 Fairview Park Drive, Elmsford, New York 10523
Bulletin 162
Rev
.
D
Bulletin 162
Rev.
D
Model G4A-300
Quick Response
Concealed Automatic
300 psi (20,7 bar) Rated
Sprinkler
The G4A-300 Concealer
®
A Quick Response Concealed Sprinkler
with ½” (13mm) or
1½” (38mm) Adjustment
Features
1. Cover plate attachment (Plain or Perforated) with
½” (13mm) total adjustment. Does not re-
quire clips or springs.
2. Smooth aesthetic ceiling profile.
3. Factory installed protective cap.
4. Available in brass, chrome or black plated
and white painted finishes.
5. Ordinary temperature rating.
6. 300 psi (20,7 bar) maximum pressure rating.
Listings & Approvals
1. Listed by Underwriters Laboratories, Inc. and Certified
by UL for Canada (cULus) - Quick Response
2. NYC - MEA - 258 - 93 - E
Note:
Approvals are for light and ordinary hazard. The
cup and skirt are fabricated from plated steel and are
recommended for interior, non-corrosive applications.
Note:
Paint or any other coatings applied over the factory
finish will void all approvals and warranties.
US. Patent Number 4,880,063
The Model G4A-300 Concealer
®
is designed for use where
aesthetic appearance is important. It can be used at working
pressures up to 300 psi (20,7 bar).
The Model G4A-300 Concealer
®
is a cULus Listed Quick
Response Concealed Sprinkler intended for use in accor-
dance with NFPA 13.
Product Description
The Reliable Model G4A-300 Concealer
®
uses a proven
quick response 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 assembly.
This threaded engagement provides ½” (13mm) of cover
adjustment. The flat cover plate is attached to the skirt us-
ing 135°F (57°C) ordinary temperature classification solder.
When the ceiling temperature rises, the solder holding the flat
cover plate melts, the flat cover plate released thus exposing
the sprinkler inside to the rising ambient temperature.
The subsequent fusing of the solder element in the sprin-
kler opens the waterway and causes the deflector to drop
into position to distribute the discharging water. Any secure
engagement between the cover plate and cup will assure
that the drop-down deflector is properly located below the
ceiling.
Application
The Reliable Model G4A-300
Concealer
®
is a versatile quick
response concealed sprinkler.
It provides the best form of fire
protection while offering an at-
tractive appearance and ½”
(13mm) cover plate adjustment
for ease of installation. The small
diameter cover plate assembly
is easily attached and blends
into the ceiling, concealing the
most dependable fire protection,
an automatic sprinkler system.
