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Viking Quick Response Dry Upright Sprinklers are thermosensitive spray sprinklers suitable for use in areas subject to freezing. The sprinklers are designed for dry systems and preaction systems where it is necessary to prevent water or condensation from entering the supply nipple before sprinkler operation. They are also suitable for use in unheated spaces above ceilings of heated rooms equipped with wet sprinkler systems. Refer to technical data sheet for design and installation requirements.