June 23, 2026
NFPA 25 2026 has a variety of new requirements for fire sprinkler system inspection, testing, and maintenance—learn some of the important updates.
May 21, 2026
While a spray nozzle also serves in active fire protection systems, it is not a fire sprinkler! Learn the differences, the variations, and how nozzles fit into NFPA 15, NFPA 750, and NFPA 13 systems.
May 3, 2026
NFPA 15 water spray fixed spray systems are very different from fire sprinkler systems, providing more targeted water to handle specific hazards. Learn how they work, use cases, and major components.
March 22, 2026
How and why two types of deluge systems deliver a lot of water, fast In the movies, all fire sprinklers always go off at the … Read more
November 19, 2025
Iron fittings come in multiple varieties. Should you choose cast iron fittings, ductile iron, or malleable iron? Learn the NFPA rules and pros and cons of each.
November 5, 2025
A sprinkler supervisory switch, whether it’s a flow, tamper, or pressure switch, has specific electrical specs. Learn more about these numbers.
October 22, 2025
Long dry sprinkler barrels can cause a practical reduction in K-factor. But learn why there’s usually still only one sprinkler K-factor number for all barrel lengths.
September 24, 2025
Learn how to choose and install a sprinkler escutcheon extension tube that can cover extra-long sprinkler drops or dry sprinkler barrels.
September 11, 2025
Fire sprinkler test and drain valves have a 1/2” plugged port. Learn what this system access point is (and isn’t) intended to do.
August 27, 2025
Tyco BlazeMaster CPVC pipes & fittings are no longer sold by that fire protection manufacturer. Learn where and how you can still purchase this high-quality CPVC brand.
August 14, 2025
Smoke and CO detector testers are essential for verifying that alarm systems function properly. But know the shelf life of smoke and CO cartridges!
July 30, 2025
Air maintenance devices are essential components of dry and preaction sprinkler systems. Learn how they work and fit into these systems.
July 17, 2025
With so many corrosion-resistant fire sprinklers available, how do you choose one? Different environments can require different coatings or materials.
July 2, 2025
Viking’s InstaSeal® welded outlets allow hand-tightening fire sprinklers—but you have to have the right caps to do it. Learn how to ID and order the right sprinklers.
June 19, 2025
Dry and preaction sprinkler systems are more prone to corrosion. Learn about two options to handle it: vapor corrosion inhibitors and nitrogen sprinkler systems.
June 4, 2025
Density/area curves were a major feature of NFPA 13’s fire sprinkler hydraulic calculations—until the 2022 and 2025 editions. Here’s why they were removed and what replaced them.
