Knox Box FDC Lock 3" Male NH/NST Locking Cap Model:3158 (6.0 TPI x 3.623 OD) single or double jacket hose

single or double jacket hose

Aluminum Male to Male Adapter

Type "DP" brass 4 inch male camlock (Cam & Groove) dust plug

Type "F" stainless steel 4 inch male camlock (Cam & Groove) coupler to 3 inch male NPT threads

Knox Box FDC Lock 3" Male NH/NST Locking Cap Model:3158 (6.0 TPI x 3.623 OD) single or double jacket hoseKnox FDC Locks protect fire department connections (FDCs), keeping pipes clean of debris to ensure the delivery of high pressure water flow to fire sprinkler systems. The Knox FDC Lock is available in 2 1 2" configuration and is operated with a Knox FDC wrench controlled by the Fire Department. Ensures ready and reliable connections to fire sprinkler systems Protects check valves from freezing in cold climate areas Eliminates costly services to back