A valve controlling flow to water-based fire protection systems. Control valves do not include hose valves, inspector's test valves, drain valves, trim valves for dry pipe, preaction and deluge valves, check valves, or relief valves
NFPA 502 Standard for Road Tunnels, Bridges, and Other Limited Access Highways, 2004 ed. (Std: Road Tunnel, Brdg and Other Limited Access Highways - Amer) {327 NFC}