Reliable™ R1235 Model G Horizontal Sidewall Sprinkler | SR | 5.6K | Chrome | 286°F | 1/2 in. NPT | Part No. GH3C
The Reliable™ Model G Horizontal Sidewall fire sprinkler (SIN R1235) is a standard response, standard spray sprinkler designed for dependable performance in light and ordinary hazard applications where wall-mounted coverage is required. Part number GH3C combines a 5.6 K-factor with a 286°F (141°C) temperature rating and a chrome-plated finish, providing an attractive and corrosion-resistant option for finished interiors and exposed piping.
This sprinkler is engineered for installation along walls or beams, allowing the deflector to project water in a quarter-spherical spray pattern that covers the area below and in front of the sprinkler. The Model G Horizontal Sidewall sprinkler connects via a 1/2-inch NPT thread and is designed for use in wet pipe fire sprinkler systems when installed, inspected, and maintained in accordance with NFPA 13 and the authority having jurisdiction. The unit operates automatically when the heat-sensitive glass bulb reaches its rated temperature, releasing the sealing assembly to initiate water discharge.
Listings and approvals include cULus Listing and FM Approval, ensuring compliance with key fire protection standards. The sprinkler’s maximum working pressure is 175 psi (12 bar).
The Model G series is available in Brass, Chrome, and White finishes with temperature ratings of 155°F, 175°F, 200°F, and 286°F, allowing flexibility across a wide range of design requirements and environmental conditions.
For best results, use the manufacturer-recommended Model W2 sprinkler wrench during installation to ensure proper engagement and avoid over-tightening or mechanical damage. Handle carefully to prevent impact on the glass bulb or frame, and do not install any sprinkler that shows signs of damage, corrosion, or non-factory-applied paint. Maintain the sprinkler system in accordance with NFPA 25 and applicable local codes.
