Frequently Asked Questions

According to NFPA 25 and local municipal codes, fire sprinkler systems require quarterly visual inspections, annual main drain flow testing and valve maintenance, and 5-year internal pipe obstruction inspections. Express Fire Sprinkler Inc. provides certified inspectors and automated compliance tracking.

A wet pipe system is constantly filled with pressurized water, offering immediate discharge when a sprinkler head reaches operating temperature. A dry pipe system contains pressurized air or nitrogen, holding water back behind a dry valve until a head opens???ideal for unheated environments prone to freezing, such as parking garages or cold storage.

Call our 24/7 Emergency Response Line immediately at (800) 911-FIRE. Locate the main riser control valve to shut off the water supply if safe to do so. Our emergency service technicians are dispatched immediately with spare parts to isolate and repair the line.

Yes! We have full in-house NICET Level III/IV engineers and Licensed Professional Engineers (PE). We create 3D BIM CAD drawings, perform hydraulic water flow calculations, and manage full plan approval submittals with the NYC Department of Buildings (DOB) and local Fire Marshals.