Loss of Fluid in Glass Bulb Sprinklers

From NFSA TechNotes Issue # 369 March 15, 2017 What would cause the loss of fluid in glass bulb sprinklers? Answer: There can be several causes for the loss of fluid in a glass bulb such as damage during shipment, handling and installation in the field. From a manufacturing standpoint, UL adopted a revision into its sprinkler standards in 2003 …