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Reliable Automatic Sprinkler Co., Inc.,

 103 Fairview Park Drive, Elmsford, New York 10523

Model G6-56 
Concealed Quick Response
Sidewall Standard Spray Sprinkler
(SIN RA5035)

Bulletin 050

Bulletin 050

The Sidewall Concealer

Nominal 5.6 (80 metric) K-Factor
Designed for Light and Ordinary 
Hazard occupancies.
Features:

1.  Flat cover plate (Solid or Perforated).

2.  Sprinkler is approved for 175 psi (12,0 bar)  

applications.

3.  Quick response, sidewall standard spray 

sprinkler.

4.  Push-on/pull-off, sturdy convenient flat cover 

plate.

5.  Sprinkler, shipped complete with factory in-

stalled  protective cap.

6.  Sprinkler assembly and cover plate pack-

aged separately.

7.  Nominal 5.6 (80 metric) K-Factor.

8.  ¼” (6 mm) cover plate adjustment.

9.  Cover plate available, either solid or perfo-

rated, in a wide variety of colors and finishes.

Approval Organizations

1. Listed by Underwriters Laboratories Inc. and 

UL certified for Canada (cULus).

UL Listing Category

Sprinklers, Automatic and Open
Quick Response 
Sidewall Standard Spray Sprinklers

Patents:

U.S. Patent No. 7,353,882, other Patents pending

Product Description

The Reliable Model G6-56 Concealed Quick Response 

Sidewall Standard Spray Sprinkler is an attractive, con-
cealed sprinkler assembly that utilizes a push-on/pull-off 
cover plate assembly. The sprinkler assembly is shipped 
with a protective cap.  

 The flat cover plate is attached to the skirt using 135°F 

(57°C) ordinary temperature classification solder.  The sprin-
kler is easily installed into the sprinkler fitting using the Model 
G6 Sprinkler Wrench.  

When the ambient temperature rises, the solder holding 

the cover plate melts, allowing the release of this part and 
thus exposing the sprinkler inside to the rising ambient tem-
perature.

The Model G6-56 utilizes a Quick Response soldered link.  

This quick response enables the sprinkler to apply water to 
a fire sooner than standard response sprinklers of the same 

temperature rating.

 This sprinkler is listed for a maximum service pressure of 

175 psi (12,0 bar).

Application and Installation

The Model G6-56  sprinkler is intended for installation in 

accordance with NFPA 13.  This sprinkler is especially well-
suited for use in student dormitories, hotels, hospitals and 
health care facilities.

Model G6-56 Concealed Horizontal Sidewall sprinklers 

utilize a sprinkler assembly with spring loaded deployable 
deflector feature.  The assembly is  completed by the instal-
lation of the attractive, 135°F (57°C) push-on/pull-off cover 
plate assembly, which provides ¼” (6 mm) of adjustment.

Apply a Teflon* - based thread sealant to the sprinkler 

threads.  After a 2 

5

/

8

” (66.7mm) diameter hole is cut in the 

wall, the sprinkler is easily installed and properly oriented 
with the Model G6 Wrench, as follows:

Do not remove the factory installed plastic protective cap 

since it is sized to fit inside the G6 wrench. Note that the 
sprinkler can only mate when the sprinkler’s deflector orien-
tation tab (Fig. 1) is aligned with wrench’s key-way. The G6 
wrench is provided with bubble level pad and TOP mark-
ing, to allow the proper orientation of the horizontal sidewall 
deflector. Final leveling can be done after leak proof joint is 
obtained with a minimum to maximum torque of 8 to 18 ft-lbs 
(11 to 24 N.m). Leave the protective cap on to protect the 
sprinkler while the wall is plastered, wallpapered or painted.

The protective cap must be removed and the listed cover 

plate installed prior to the sprinkler system being placed in 
service.

Concealed cover plate/cup assemblies are listed only for 

use with specific sprinklers.  The use of any other concealed 
cover plate/cup assembly with the Model G6-56 Horizontal 
Sidewall Sprinkler or the use of this dedicated concealed 
cover plate assembly on any sprinkler with which it is not 
specifically listed will void all guarantees, warranties, listings 
and approvals.
* DuPont Registered Trademark

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