Viking Viking Stainless Steel Dry Pendent 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 drop nipple before sprinkler operation. They may also be installed in spaces subject to freezing and supplied from a wet system in an adjacent heated area.  NOTE: Viking Stainless Steel Dry Pendent sprinklers carry no listings or approvals.  These sprinklers are not listed as corrosion-resistant sprinklers, and are not intended for use in corrosive environments.