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.
Some water leaks out of the ball drip valve under an FDC while doing a hydrostatic test. Is this normal? Learn why it is and what to do.
An OS&Y valve is a type of gate valve used in sprinkler and standpipe systems as a control valve. Read this guide to when and why they are used.
Learn when to use indicating valves on fire protection systems and how NFPA standards governing these devices have changed.
Globe valve vs. gate valve vs. ball valve—which is best for the job? QRFS explains how to pick the right valve for specific applications.
Learn the difference between backflow preventers vs. check valves, and why backflow preventers offer the best protection against water contamination.
Learn how Backflow Check Key Tools make it easier and safer to service check valves in backflow preventers.
Backflow preventers stop harmful contaminants from polluting municipal drinking water. Learn more about backflow and when backflow preventers are required.
Antifreeze isn’t always the best—or the only—approach to fire sprinkler system freeze prevention. Learn how ball valves, drum drips, and other equipment can prevent damage and failure.
With threaded ports for gauges and a drain valve, backflow-preventing sprinkler check valves can expedite the code-compliant installation of system risers. Read on to learn more about the design and installation of “shotgun” risers—and how they compare to common alternatives.
For a slip-free grip and maximum leverage, follow QRFS’s guide to sizing valve wheel wrenches that turn handwheel valves safely.
