VK638 - "Corridor Sprinkler" - QREC Concealed Horizontal Sidewall Sprinkler (K8.0)
Viking's Model VK638 Quick Response Extended Coverage Concealed Horizontal Sidewall Sprinkler is designed specifically to protect corridors, hallways, decks, walkways, and any other application where a wide spray pattern is optimal. The VK638 is cULus Listed for Light Hazard occupancies and has a K-factor of 8.0 (115). The sprinkler is available in both recessed and domed concealed models, and is pre-assembled with a threaded adapter for installation with a domed cover.
The VK638 uses Viking’s patented flow-shaper technology to provide larger coverage areas at lower flow and pressure requirements. The sprinkler is cULus Listed for 28 x 12 ft (8,5 x 3,7 m) and 28 x 14 ft (8,5 x 4,3 m) coverage areas, with the deflector installed up to 12 in (305 mm) below the ceiling. The 28 x 12 ft (8,5 x 3,7 m) coverage area is unique in the industry, providing a significant flow and pressure advantage for fire sprinkler systems where this area of coverage can be applied.
Both recessed and domed concealed models are available in 135°F (57°C), 155°F (68°C), 175°F (79°C), and 200°F (93°C) temperature ratings The VK638 has a ¾ inch (20 mm) thread size, and is available in standard finishes that include brass, white, chrome, and black as well as a nearly unlimited variety of custom colors.