Reliable™ R1235 Model G Horizontal Sidewall Sprinkler | Standard Response (SR) | 5.6K | Brass | 286°F | 1/2 in. NPT | Part No. GH3B
The Reliable™ Model G horizontal sidewall fire sprinkler (SIN R1235) is a standard response, standard spray sprinkler designed for dependable fire protection in approved light and ordinary hazard applications where sidewall mounting is required. Part number GH3B combines a 5.6 K-factor (80 metric) with a 286°F (141°C) temperature rating and a brass finish, making it a strong choice for exposed installations where a traditional metallic appearance is preferred and higher ambient temperatures may be present.
This sidewall sprinkler is engineered to mount along walls or beams and project water outward and downward in a quarter-spherical distribution pattern intended to cover the area below and in front of the sprinkler when installed to the correct spacing and obstruction requirements. In a fire condition, the heat-responsive glass bulb operates at its rated temperature, releasing the sealing assembly so water can flow through the orifice and strike the deflector, producing a uniform standard spray pattern to help control fire growth. The sprinkler installs with a 1/2 in. NPT connection and is intended for use in wet pipe systems when installed and maintained in accordance with applicable NFPA standards and the authority having jurisdiction.
Because sidewall sprinklers have unique layout considerations compared to pendent and upright sprinklers, proper placement is critical to achieve intended coverage and to avoid discharge interference from soffits, beams, lighting, ductwork, and other obstructions. Keep sprinklers in original packaging until installation, handle carefully to avoid impact to the glass bulb and deflector, and use the correct sprinkler wrench engagement to prevent frame distortion and over-tightening. Do not install any sprinkler that appears damaged, corroded, leaking, or field-painted, and maintain the system in accordance with NFPA 25 and local requirements.
