Reliable™ RA6424SS155 Product Description
Reliable™ Model F1-56SS Upright Fire Sprinkler Head
Sprinkler Identification Number (SIN): RA6424
This Upright sprinkler features a Stainless Steel finish and a 155°F (68°C) temperature rating.
The Reliable™ Model F1-56SS Upright Fire Sprinkler is a standard response, standard coverage sprinkler head with a 5.6 K-Factor. It includes a heat-sensitive 3 mm glass bulb and a 1/2 in. NPT connection. The frame and deflector are made from stainless steel for added corrosion resistance, and the finish is Stainless Steel.
This is a standard response, standard coverage upright sprinkler with a maximum working pressure of 175 PSI. The unit operates using a heat-activated glass bulb, which opens at 155°F to initiate sprinkler operation.
RA6424 sprinklers are installed in the upright position only. Refer to the manufacturer data sheet for installation specifications and approved accessories.
Reliable™ Upright Fire Sprinkler (RA6424) Listings and Approvals
Each sprinkler head is manufactured by Reliable™, a recognized fire protection equipment manufacturer. When properly installed, this RA6424 variant maintains the following approvals:
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UL Listed
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cULus Listed
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FM Approved
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CE Marked
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VdS Approved
RA6424 Upright Sprinkler – Design Parameters
The Reliable™ RA6424SS155 is intended for use in NFPA 13-compliant systems. Apply the listed areas of coverage and minimum water supply requirements as described in the data sheet. This upright sprinkler connects to wet-pipe fire protection systems and has a maximum working pressure of 175 PSI (12.1 BAR).
RA6424 Installation and Approved Accessories
Installers must avoid over-tightening, which can damage the 1/2 in. NPT thread or the sprinkler head. Use the manufacturer-approved installation wrench and tighten to the specified torque noted in the data sheet. Always reference the technical bulletin for proper installation and storage guidelines.
Approved Accessories:
Sprinkler Wrench:
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Model W2 Installation Wrench
Guards & Shields:
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D-1 Guard (cULus)
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D-3 Guard & Shield (cULus)
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C-1 Guard (FM – available in type 316 stainless steel)
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C-3 Guard & Shield (cULus, FM)
Note: Guards and shields for this model are not corrosion resistant unless otherwise specified.
Available RA6424 Sprinkler Heads
This upright sprinkler is also available in a Stainless Steel finish at the following temperature ratings:
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135°F (57°C)
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155°F (68°C)
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175°F (79°C)
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200°F (93°C)
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286°F (141°C)
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360°F (182°C)
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500°F (260°C)
