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The Reliable Automatic Sprinkler Co., Inc.,

 

103 Fairview Park Drive, Elmsford, New York 10523

Model F1FR-FS56

Model F1FR-FS42

Quick Response

Flat Spray Sprinklers

Bulle

tin 022 A

ug

ust 2021

Bulletin 022 August 2021

Models F1FR-FS56 and F1FR-FS42 Flat 
Spray Sprinklers 
Types

Standard Pendent

Listings & Approvals

F1FR-FS56

• 

VdS Schadenverhütung GmbH: Certificate 

G4080047

• 

CE Certificate: EC-Certificate of conformity 0786-

CPD-40242

F1FR-FS42

• 

VdS Schadenverhütung GmbH: Certificate 

G414023

• 

CE Certificate: Certificate of constancy of 

performance 0786-CPR-40296

Product Description

The F1FR-FS56 and F1FR-FS42 Flat Spray Sprinklers 

are designed for installation in accordance with CEA 4001 

or EN 12845 (Automatic Sprinkler Systems - Design, 
Installation and Maintenance). The spray pattern created 
by this sprinkler makes this an excellent choice for 

applications with lower clearance above the suspended 
open ceilings and in racks.

The F1FR-FS56 and F1FR-FS42 Flat Spray Sprinklers 

with shield  are used in applications where there are high 
and lower level sprinklers. The shield is to help prevent the 

lower level sprinklers from getting wet by the higher level 

sprinklers.

The F1FR-FS56 and F1FR-FS42 Flat Spray Sprinklers 

utilize a frangible 3.0mm glass bulb. The glass bulb 

consists of an accurately controlled amount of special fluid 
hermetically sealed inside of a precisely manufactured 
glass capsule. This glass bulb is specially constructed to 

provide fast thermal response.

At normal temperatures, the glass bulb contains the fluid 

in both the liquid phase and in the vapor phase. The vapor 
phase can be seen as a small bubble. As heat is applied, 

the liquid expands forcing the bubble smaller and smaller 

as the liquid pressure increases. Continued heating forces 
the liquid to push out against the bulb, causing the glass to 

shatter, opening the waterway and allowing the deflector to 

distribute the discharging water.

The F1FR-FS56 and F1FR-FS42 Flat Spray Sprinklers 

temperature rating are identified by the color of the glass 

bulb capsule.

Pendent

Pendent with shield

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