Bulletin 065 August 2024
Model F1FR-SS Series Stainless Steel Sprinklers
Standard spray, quick-response
cUlus Listed, FM Approved
VdS Approved, CE Listed
Features
Important! Reliable fire sprinklers must be handled, stored, and
installed in accordance with the guidelines in Caution Sheet 310
• Type 316 stainless steel alloy frame, deflector, and cap
and this bulletin. Failure to follow these instructions may result in
• cULus Listed and FM Approved as Corrosion Resistant unintended operation or nonoperation of the fire protection system.
sprinklers
• Available as Upright, Pendent, or Recessed Pendent
sprinklers
• Available with polyester finishes.
Product Description
Model F1FR-SS series sprinklers are standard spray, quick-re-
sponse sprinklers intended for installation in accordance with
NFPA 13. The sprinklers are cULus Listed and FM Approved as
Corrosion Resistant sprinklers and feature a frame, deflector, and
cap made of Type 316 stainless steel alloy.
Model F1FR-SS series sprinklers include upright and pendent F1FR56SS Upright F1FR80SS Upright
sprinklers. Model F1FR-SS series pendent sprinklers are cULus
Listed for installation with Reliable Model F1 and FP recessed
escutcheons. The Reliable Model F2 escutcheon is cULus Listed
and FM Approved for use with Model F1FR-SS series sprinklers.
Reliable Model B one-piece escutcheons are also available. All
escutcheons listed in this bulletin are manufactured Type 316
stainless steel alloy.
All Model F1FR-SS series sprinklers use a 3 mm glass bulb
operating element and beryllium-nickel alloy sealing washer gold
plated per MIL-G-45204, Type 3, Class 2 with PTFE tape on both
sides.
F1FR56SS Pendent F1FR80SS Pendent
Model F1 Model F2 Model FP Model B
Recessed Escutcheon Recessed Escutcheon Recessed Escutcheon Escutcheon
Table A
Sprinkler
Nominal K-Factor Thread Size
Sprinkler Model Identification
gpm/psi1/2 (l/min/bar1/2) NPT or ISO7-1
Number (SIN)
F1FR56SS Pendent 5.6 (80) 1/2 RA6514
F1FR56SS Upright 5.6 (80) 1/2 RA6524
F1FR80SS Pendent 8.0 (115) 3/4 RA6512
F1FR80SS Upright 8.0 (115) 3/4 RA6522
www.reliablesprinkler.com
Model F1FR56SS Pendent Standard Spray Sprinkler SIN RA6514
Technical Specifications Finishes
Style: Pendent or Recessed Pendent See Table B
Threads: 1/2” NPT or ISO 7-1R1/2
Nominal K-Factor: 5.6 (80 metric) Sensitivity
Max. Working Pressure: 175 psi (12 bar) Quick-response
Material Specifications Temperature Rating
Thermal Sensor: 3 mm glass bulb 135°F (57°C)
Frame: Type 316L stainless steel 155°F (68°C)
Sealing Washer: Beryllium-nickel alloy gold plated 175°F (79°C)
per MIL-G-45204, Type 3, Class 2 w/ PTFE tape on 200°F (93°C)
both sides. 286°F (141°C)
Load Screw: Type 316 stainless steel
Deflector: Type 316 stainless steel Sprinkler Wrench
Cap: Type 316 stainless steel Model W2 (pendent)
Model W4 (recessed pendent)
Recessed Escutcheons(1) Listings and Approvals
F1 (cULus Listed) cULus Listed
F2 (cULus Listed, FM Approved) FM Approved
FP (cULus Listed) CE Listed (0786-CPR-40331)
VdS Approved (G421006)
Guards and Shields(2)
D-1 Guard (cULus & FM)
D-5 Guard & Shield (cULus & FM)
C-1 Guard (FM)(3)
C-5 Guard & Shield (FM)
D-4 Guard & Shield (FM)
S-1 Shield (cULus & FM)
Notes:
1. For use only with maximum 200°F temperature rated sprinklers.
2. Guards and shields are formed from steel and are not considered corrosion resistant.
3. The Model C1 guard is available FM Approved in Type 316 stainless steel.
Model F1FR56SS Pendent Sprinkler Components and Dimensions Figure 1
3 1/4" [83mm]
Threads
F1_HALF_PEND_INT
Wrench Flat 2 1/4" [57mm]
Cap/Seal
Assembly
Glass Bulb
(5 mm)
Deflector
Load Screw
1" [25mm]
Shown with Optional S-1 Water
Shield (Ordered Separately)
Note: See page 6 for recessed installation.
Bulletin 065 Page 2 of 7
August 2024 www.reliablesprinkler.com
Model F1FR56SS Upright Standard Spray Sprinkler SIN RA6524
Technical Specifications Finishes
Style: Upright See Table B
Threads: 1/2” NPT or ISO 7-1R1/2
Nominal K-Factor: 5.6 (80 metric) Sensitivity
Max. Working Pressure: 175 psi (12 bar) Quick-response
Material Specifications Temperature Rating
Thermal Sensor: 3 mm glass bulb 135°F (57°C)
Frame: Type 316L stainless steel 155°F (68°C)
Sealing Washer: Beryllium-nickel alloy gold plated 175°F (79°C)
per MIL-G-45204, Type 3, Class 2 w/ PTFE tape on 200°F (93°C)
both sides. 286°F (141°C)
Load Screw: Type 316 stainless steel
Deflector: Type 316 stainless steel Sprinkler Wrench
Cap: Type 316 stainless steel Model W2
Guards and Shields(1) Listings and Approvals
D-1 Guard (cULus) cULus Listed
D-3 Guard & Shield (cULus) FM Approved
C-1 Guard (FM)(2) CE Listed (0786-CPR-40332)
C-3 Guard & Shield (cULus, FM) VdS Approved (G421008)
Note:
1. Guards and shields are formed from steel and are not considered corrosion resistant.
2. The Model C1 guard is available FM Approved in Type 316 stainless steel.
Model F1FR56SS Upright Sprinkler Components and Dimensions Figure 2
1 3/8" [33mm]
Load Screw
Deflector
Glass Bulb
(3 mm) F1FR_HALF_UPR
2 3/8" [60mm]
Wrench Flat
Threads Cap/Seal Assembly
Bulletin 065 Page 3 of 7
August 2024 www.reliablesprinkler.com
Model F1FR80SS Pendent Standard Spray Sprinkler SIN RA6512
Technical Specifications Finishes
Style: Pendent or Recessed Pendent See Table B
Threads: 3/4” NPT or ISO 7-1R3/4
Nominal K-Factor: 8.0 (115 metric) Sensitivity
Max. Working Pressure: 175 psi (12 bar) Quick-response
Material Specifications Temperature Rating
Thermal Sensor: 3 mm glass bulb 135°F (57°C)
Frame: Type 316L stainless steel 155°F (68°C)
Sealing Washer: Beryllium-nickel alloy gold plated 175°F (79°C)
per MIL-G-45204, Type 3, Class 2 w/ PTFE tape on 200°F (93°C)
both sides. 286°F (141°C)
Load Screw: Type 316 stainless steel
Deflector: Type 316 stainless steel Sprinkler Wrench
Cap: Type 316 stainless steel Model W2 (pendent)
Model W4 (recessed pendent)
Recessed Escutcheons(1)
F1 (cULus Listed) Listings and Approvals
F2 (cULus Listed, FM Approved) cULus Listed
FP (cULus Listed) FM Approved
CE Listed (0786-CPR-40337)
VdS Approved (G421012)
Guards and Shields(2)
D-1 Guard (cULus)
D-5 Guard & Shield (cULus)
S-2 Shield (cULus, FM)
C-1 Guard (FM)(3)
C-5 Guard & Shield (FM)
Notes:
1. For use only with maximum 200°F temperature rated sprinklers.
2. Guards and shields are formed from steel and are not considered corrosion resistant.
3. The Model C1 guard is available FM Approved in Type 316 stainless steel.
Model F1FR80SS Pendent Sprinkler Components and Dimensions Figure 3
3 1/4" [83mm]
Threads
Wrench Flat
F1FR_THREE QTR_PEND_INT
2 3/8" [61mm]
Cap/Seal
Assembly
Glass Bulb
(3 mm)
Deflector
Load Screw
1 1/4" [30mm]
Shown with Optional S-1 Water
Shield (Ordered Separately)
Note: See page 6 for recessed installation.
Bulletin 065 Page 4 of 7
August 2024 www.reliablesprinkler.com
Model F1FR80SS Upright Standard Spray Sprinkler SIN RA6522
Technical Specifications Finishes
Style: Upright See Table B
Threads: 3/4” NPT or ISO 7-1R3/4
Nominal K-Factor: 8.0 (115 metric) Sensitivity
Max. Working Pressure: 175 psi (12 bar) Quick-response
Material Specifications Temperature Rating
Thermal Sensor: 3 mm glass bulb 135°F (57°C)
Frame: Type 316L stainless steel 155°F (68°C)
Sealing Washer: Beryllium-nickel alloy gold plated 175°F (79°C)
per MIL-G-45204, Type 3, Class 2 w/ PTFE tape on 200°F (93°C)
both sides. 286°F (141°C)
Load Screw: Type 316 stainless steel
Deflector: Type 316 stainless steel Sprinkler Wrench
Cap: Type 316 stainless steel Model W2
Listings and Approvals
Guards and Shields(1)
cULus Listed
D-1 Guard (cULus)
FM Approved
D-3 Guard & Shield (cULus)
CE Listed (0786-CPR-40336)
C-1 Guard (FM)(2)
VdS Approved (G421011)
C-3 Guard & Shield (cULus, FM)
Note:
1. Guards and shields are formed from steel and are not considered corrosion resistant.
2. The Model C1 guard is available FM Approved in Type 316 stainless steel.
Model F1FR80SS Upright Sprinkler Components and Dimensions Figure 4
Load Screw 1 3/8" [36mm]
Deflector
Glass Bulb
(3 mm)
F1FR_THREE QTR_UPR
Wrench Flat 2 3/8" [62mm]
Threads Cap/Seal Assembly
Bulletin 065 Page 5 of 7
August 2024 www.reliablesprinkler.com
Recessed Installation: Pendent Sprinklers Figure 5
2-1/4" 2-1/4"
(57 mm) Dia. (57 mm) Dia.
Hole in Ceiling Hole in Ceiling
1-15/16" 1-15/16"
(49 mm) Dia. Reducing (49 mm) Dia. Reducing
Fitting Fitting
Face of Fitting Face of Fitting
to Face of Ceiling to Face of Ceiling
1-1/8" (29 mm) at 7/8" (22 mm) at
Max. Recess Max. Recess
3/8" (10 mm) at 3/8" (10 mm) at
Min. Recess Min. Recess
1-3/4" 1-3/4"
(44 mm) 1" (44 mm) 1-1/4"
(25 mm) (32 mm)
Minimum Maximum Minimum Maximum
Recess 2-7/8" (72 mm) Dia. Recess Recess 2-7/8" (72 mm) Dia. Recess
Models F1 & F1FR Pendent Sprinkler Models F1 & F1FR Pendent Sprinkler
with Model F1 Recessed Escutcheon with Model F2 Recessed Escutcheon
3/4" (19mm) Nominal Adjustment 1/2" (13mm) Nominal Adjustment
F1_REC_PEND
2-1/2"
(64 mm) Dia.
Hole in Ceiling
2-5/16"
(59 mm) Dia. Reducing
Fitting
Face of Fitting
to Face of Ceiling
Vented Cup
1-1/2" (38 mm) at
Max. Recess
1" (25 mm) at
Min. Recess
1"
(25 mm) 1/2"
(12 mm)
Minimum
Recess 3-3/16" (78 mm) Dia.
Maximum
Recess
Models F1 & F1FR Pendent Sprinkler
with Model FP Recessed Escutcheon
1/2" (13mm) Nominal Adjustment
Note: Model FP recessed assemblies may not be used where the
pressure in the space above the ceiling is positive with respect to
the protected area. Ensure that the openings in the Model FP cup
are unobstructed following installation.
Bulletin 064 Page 6 of 7
August 2024 www.reliablesprinkler.com
Wrench
Model W2 (upright, non-recessed pendent) Model W4 (recessed pendent)
Application Maintenance
Model F1FR-SS series sprinklers are standard spray, quick-re- Model F1FR-SS series sprinklers should be inspected and the
sponse sprinklers intended for installation in accordance with sprinkler system maintained in accordance with NFPA 25. Do
NFPA 13 and the requirements of applicable Authorities Having not clean sprinklers with soap and water, ammonia or any other
Jurisdiction. Model F1FR-SS series sprinklers are cULus Listed cleaning fluids. Remove dust by gentle vacuuming. Replace any
and FM Approved as Corrosion Resistant sprinklers. Verify com- sprinkler which has been painted (other than factory applied) or
patibility with the environment where the sprinkler will be located damaged in any way. A stock of spare sprinklers should be main-
prior to installation. tained to allow quick replacement of damaged or operated sprin-
klers. Prior to installation, sprinklers should be maintained in the
Installation original cartons and packaging until used to minimize the potential
for damage to sprinklers that would cause improper operation or
Glass bulb sprinklers have orange bulb protectors to minimize bulb non-operation.
damage during shipping, handling, and installation. Reliable sprin-
kler installation wrenches are designed to install sprinklers with bulb Listings and Approvals
protectors in place. Remove the bulb protector at the time when the
sprinkler system is placed in service for fire protection. Removal of • cULus Listed
the bulb protector before this time may leave the bulb vulnerable to • FM Approved
damage. Remove bulb protectors by undoing the clasp by hand. Do • VdS Approved, CE Listed (see sprinkler pages for number)
not use tools to remove bulb protectors.
Model F1FR-SS series sprinklers must be installed with the Reli- Guarantee
able sprinkler installation wrench identified in this Bulletin. Any other
wrench may damage the sprinkler. Recommended installation torque For the Reliable Automatic Sprinkler Co., Inc. guarantee, terms,
is 8 to 18 lb/ft (11 to 24 N/m) for 1/2” NPT and ISO7-1R1/2 sprinklers and conditions, visit www.reliablesprinkler.com.
or 14 to 20 lb/ft (19 to 27 N/m) for 3/4” NPT and ISO7-1R3/4 sprin-
klers. Do not tighten sprinklers over the maximum recommended in- Ordering Information
stallation torque. Exceeding the maximum recommended installation
torque may cause leakage or impairment of the sprinkler. Specify the following when ordering:
Model
Recessed pendent sprinklers are to be installed as shown in Fig. 5.
• [F1FR56SS] [F1FR80SS]
Model F1FR-SS series recessed pendent sprinklers may only be in-
Orientation
stalled with the Reliable Model F1 stainless steel, Model F2 stainless
• [Upright] [Pendent]
steel, or Model FP stainless steel recessed escutcheon. The use of
Temperature Rating
any other recessed escutcheon will void all approvals and negate all
• See sprinkler pages
warranties.
Threads
• [NPT] [ISO7-1]
Finishes Table B Sprinkler Finish
• See Table B
Sprinkler Finishes Escutcheon Finishes Recessed Escutcheon (SS)
• [F1] [F2] [FP]
None None One-Piece Escutcheon (SS)
White Polyester White Polyester • B
Custom Color Polyester Custom Color Polyester Escutcheon Finish
• See Table B
Sprinkler Wrench
• Model W2 (upright, non-recessed pendent)
P/N 9999970522
• Model W4 (recessed pendent)
Bulletin 065 Page 7 of 7
August 2024 www.reliablesprinkler.com
