Model G4FR
Concealed
Automatic
Sprinkler
The Reliable Automatic Sprinkler Co., Inc.,
525 North MacQuesten Parkway, Mount Vernon, New York10552
The Concealer
®
A Concealed Sprinkler
With a ½
²
(13mm) or 1
1
2
²
(38mm)
Adjustment
Features
1. Cover plate assembly with ½
²
(13mm)
adjustment.
2. Smooth aesthetic ceiling profile.
3. As heat sensitive as an exposed
sprinkler.
4. Available in brass, chrome or black plated or
white painted finishes.
5. Ordinary temperature rating.
6. Multiple orifices for design flexibility.
7. Installation does not require clips or springs.
Application
The Reliable Model G4FR
Concealer is the most versatile
concealed sprinkler available.
It provides the best form of fire
protection while offering an
attractive appearance and ½
²
(13mm) of cover adjustment
for ease of installation. The small diameter cover plate
assembly is easily and positively attached and blends
into the ceiling, concealing the most dependable fire
protection available, an automatic sprinkler system.
The Concealer
®
is designed for use where aesthetic
appearance is important. Offices, hospitals, motels and
restaurants 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 very efficient installation.
The Concealer
®
can eliminate the need for precise
cutting of drop nipples. The cover plate assembly can be
adjusted without tools to fit accurately against the ceiling.
The fire protection system need not be shut down to
adjust or remove the cover plate assembly.
Product Description
The Reliable Model G4FR Standard Response
Concealer uses a proven fast 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
²
(13mm) of cover adjustment.
The flat cover plate is attached to the skirt using 135°F
(56
°
C) ordinary temperature classification solder.
When the ceiling temperature rises, the solder holding
the cover plate to skirt melts, the cover plate released thus
exposing the sprinkler inside to the rising ambient
temperature.
The subsequent fusing of the element opens the
waterway and causes the deflector to drop into position
for distributing the water. Any secure engagement
between the cover plate and cup will assure that the
drop–down deflector is properly located below the
ceiling.
Bulletin 122
Rev.
N
Bulletin
122
Rev.
N
U.S. Patent No. 4,880,063
Listings & Approvals
1.
Underwriters Laboratories, Inc. (UL)
2.
Underwriters’ Laboratories of Canada. (ULC)
3.
N.Y.C. BS&A No. 587-75-SA
4.
Factory Mutual Corporation (FM)
•Light Hazard Occupancies
•Ordinary Hazard Occupancies—
Groups 1 & 2, Wet Systems Only
Note:
Approvals are for ordinary hazard except for small
orifice sprinklers, which are limited to light hazard. The cup
and skirt are fabricated from plated steel and are intended for
interior, non-corrosive applications. Small orifice sprinklers are
limited to light hazard occupancies.
