Knox Box FDC Lock 2 1/2" NH/NST Male Locking Cap Model:3120 (6.0 TPI x 3.250 OD) you need this plug

you need this plug

Fire valve wheel wrench grip the rims of hand valve wheels securely and provide leverage for opening and closing

Our 3/8 inch and 5/8 inch band clamp hand tool applies band clamps to complete the connection between shank style couplings and hoses

User must have sufficient water pressure for the 90 GPM version to project maximum stream distance

Five inch rubber covered hoses with storz couplings are more common in the fire service than double jacket five inch hoses with expansion ring couplings

Knox Box FDC Lock 2 1/2" NH/NST Male Locking Cap Model:3120 (6.0 TPI x 3.250 OD) you need this plugThe 3110 model with 2" NH threads (7. 5 TPI x 3. 068 OD) is the most widely used configuration however, thread patterns and sizes vary by jurisdiction, so always verify the correct specifications with your local fire department before ordering. Knox 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"