With K factor of 16.8, Model VK504 is intended for freezers and cold storage facilities where wet-pipe sprinkler system is installed in conditioned space above insulated ceiling. Dry ESFR unit enables ceiling-only protection, without use of in-rack sprinklers and pre-action systems. Supplied in standard length of 37½ in. with 165°F temperature rating, sprinkler is available with 1½ in. grooved or threaded connection.
This story is related to the following:Fire Sprinklers