Semiautomatic Hose Rack Assembly: The same as a conventional pin rack or hose reel except that, after the valve is opened, a retaining device holds the hose and water until the last few feet are removed
NFPA 25 Standard for the Inspection, Testing, and Maintenance of Water-Based Fire Protection Systems, 2008 ed. https://law.resource.org/pub/us/cfr/ibr/004/nfpa.2 5.2002.pdf, (Std: Insp, Testing, and Maint of Wtr-Based Fr Prac Sys - Amer) {191 NFC}