Dover Fire Protection Service 13224 E Us Hwy 92 A Drain Sock is used to safely remove and temporarily contain water from overhead and underground sprinkler systems. This time and money saving tool should be in every facility that has a sprinkler system! Dover FL Fire Protection Service Hansel Innovations Inc Fire www.drainsock.com drainsock drain sock sprinkler fire containment plumbing stagnate stagnant overhead systems drainsock drain sock sprinkler fire containment plumbing stagnate stagnant overhead systems Business Reviews Hansel Innovations Inc Fire Testimonials