Viking Horizon® Standard Response Flush Pendent Sprinkler VK400 is a small, flush, solder link and lever spray sprinkler. Designed for use with concealed piping, the unit is mounted flush to the ceiling with the fusible link exposed. The sprinkler is available with a Polished Chrome or White painted finish with four styles of ceilings rings which allow up to ¼” (6.3 mm) of adjustment. The standard 2-11/16” (68 mm) diameter ceiling rings are available in a “thread-on” style for stability, or in a “push-on” style for ease of installation.
A 3-1/4” (82.5 mm) diameter ceiling ring is also available (thread-on only), making Standard Response Flush Pendent Sprinkler VK400 suitable for replacing Viking
Model D-1 Flush Pendent Sprinklers. The two-piece design allows installation and testing of the sprinklers prior to installation of the ceiling. The ceiling rings can be removed and reinstalled, allowing removal of ceiling panels without shutting down the sprinkler system and removing the sprinklers