Reliable G4 Manuel utilisateur

Reliable Automatic Sprinkler Co., Inc., 103 Fairview Park Drive, Elmsford, New York 10523

Bulletin 121 January 2020

Model G4 Concealed

Automatic Sprinkler

The Concealer™

Features

1. Cover plate assembly attachment with ½”

(13mm) adjustment. Does not require clips

or springs.

2. Smooth aesthetic ceiling profile.

3. Available in white or other color painted or

brass, chrome, or black plated finishes.

4. Ordinary and intermediate temperature

ratings.

5. 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.

Application

The Reliable Model G4 Concealer™ 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 small diameter cover plate assembly is easily

attached and blends into the ceiling, concealing the most

dependable fire protection available, an automatic sprin-

kler system.

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.

Reliable Automatic Sprinkler Co., Inc.

(800) 431-1588 Sales Offices

(800) 848-6051 Sales Fax

(914) 829-2042 Corporate Offices

www.reliablesprinkler.com Internet Address

Manufactured by

Recycled

Paper

Revision lines indicate updated or new data.

EG. Printed in U.S.A. 01/20 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.

Products manufactured and distributed by Reliable have been protecting life and property for almost 100 years.

Installation

Do not install The Concealer™ in ceilings which have positive

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 as-

sembly 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. Install the cover plate assembly by pushing in and

turning clockwise until it is tight against the ceiling.

Maintenance

The Model G4 Concealer™ should be inspected and the

sprinkler system maintained in accordance with NFPA 25. Do

not clean sprinklers with soap and water, ammonia or any other

cleaning fluids. Replace any sprinkler or cover plate that has

been painted (other than factory applied) or damaged in any

way. A stock of spare sprinklers should be maintained to allow

quick replacement of damaged or operated sprinklers. Prior

to installation, sprinklers should be maintained in the original

cartons and packaging to minimize the potential for damage

to sprinklers that would cause improper operation or non-op-

eration.

Ordering Information

1. Sprinkler Model

2. Temperature Rating

3. Nominal Orifice

4. Flat Cover Plate Finish

Note: Unless otherwise specified, the 165°F (74°C) sprinkler will be

provided with the 165°F (74°C) cover.

Temperature Ratings

Classification Sprinkler G4/G5 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

Intermediate 212°F/100°C 165°F/74°C 150°F/66°C

Installation Data

Sprinkler

Inlet

Total

Adjustment

Nominal

Orifice

Nominal

K Factor Approvals Sprinkler Identification

Number (SIN)

US Metric

½” NPT (R ½) ½” (13mm) ½” (15mm) 5.6 80 1,2,3 R2115

½” NPT (R ½) ½” (13mm) 7

16”(11mm) 4.2 60 1,2,3 R2113

½” NPT (R ½) ½” (13mm) 3

8” (10mm) 2.8 40 1,2,3 R2111

Cover Plate Finishes

Standard Finishes

White Paint

Chrome

Special Application

Finishes

Off White Paint

Black Paint

Custom Color Paint – Specify(1)

Raw Brass (Lacquered)

Bright Brass

Finished Bronze

Black Plated

Satin Chrome

Stainless Steel Clad(2)

(1) Custom color paint is semi-gloss, unless specified otherwise.

(2) Stainless steel clad cover plates are Type 316 Stainless Steel on the

finished side and C102 Copper Alloy on the back side. Cover plates

are not listed or approved as corrosion resistant.

Installation Wrench

Model G4 Sprinkler Wrench

Fig. 1 - ½” NPT (R½) Threaded Inlet

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