Hastings, Michigan, USA - Viking Corporation, a global leader in fire protection and life safety systems, has received a UL Listing for its VK502 dry Early Suppression Fast Response (ESFR) pendent sprinkler. The UL Listing is in addition to the product's existing FM Approval. This latest Listing makes the VK502 the industry's only UL Listed and FM Approved dry ESFR pendent sprinkler. The new model VK502 will replace the existing VK501 with UL Listing only, consolidating Viking's Dry ESFR ...This story is related to the following:Fire Sprinklers | Fire Suppression Systems |