Valves

  1. #284 – Guide to Dry Sprinkler Systems, Part 11: Annual Dry Sprinkler Tests

    #284 – Guide to Dry Sprinkler Systems, Part 11: Annual Dry Sprinkler Tests
    Learn about the annual dry sprinkler tests in NFPA 25, which includes requirements for various sprinkler system components.
  2. #276 – Sprinkler Check Valve Installation and Selection: Shotgun Riser Check Valves

    #276 – Sprinkler Check Valve Installation and Selection: Shotgun Riser Check Valves
    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.
  3. #266 – Fire Sprinkler System Risers, Part 2: Wet-Pipe Components and Assemblies

    #266 – Fire Sprinkler System Risers, Part 2: Wet-Pipe Components and Assemblies
    Get to know your fire sprinkler system risers better with a look at common components and manifolds in wet-pipe sprinkler systems—both commercial and residential.
  4. #257 – Fire Risers, Part 1: Essential Fire Sprinkler Riser Components

    #257 – Fire Risers, Part 1: Essential Fire Sprinkler Riser Components
    Each fire riser serves as a central hub for sprinkler system inspection, testing, and repair. For more on residential and commercial risers, fire sprinkler riser components, and how they’re used in different system types, read on.
  5. #242 – UL Listed and FM Approvals: Which Listings Matter for Fire Protection Under NFPA 13?

    #242 – UL Listed and FM Approvals: Which Listings Matter for Fire Protection Under NFPA 13?
    Many fire protection items are listed, approved, or certified—but what do they really mean? Learn about UL listings, FM approvals, & other certifications.
  6. #235 – What Size Valve Wheel Wrench Do You Need?

    #235 – What Size Valve Wheel Wrench Do You Need?
    For a slip-free grip and maximum leverage, follow QRFS’s guide to sizing valve wheel wrenches that turn handwheel valves safely.
  7. #163 – Angle Valve Compatibility in Fire Protection, Plumbing, and Water-Based Systems

    #163 – Angle Valve Compatibility in Fire Protection, Plumbing, and Water-Based Systems
    A wide range of standards govern the construction and use of valves—so can angle valves designed for one purpose be used for another? QRFS looks at angle valves in fire protection, HVAC, plumbing, and beyond, discussing their construction, manufacturing standards, and suitability for various applications.
  8. #155 – Guide to Dry Sprinkler Systems, Part 3: Installation of Components

    #155 – Guide to Dry Sprinkler Systems, Part 3: Installation of Components
    The additional components required in dry fire sprinkler systems compared to wet systems can make installation more challenging. QRFS helps you understand NFPA 13 requirements for installing dry pipe and check valves, as well as quick-opening and antiflooding devices.
  9. #154 – What is Water Hammer and How Does it Impact Firefighting?

    #154 – What is Water Hammer and How Does it Impact Firefighting?
    Closing or opening a valve can cause a sudden surge in pressure, threatening water-based systems and the people who work around them. QRFS explains the phenomenon known as water hammer, describing what is, how it works, and how it impacts firefighting and the design of fire protection systems.
  10. #152 – What is a Carlin Valve and When is it Necessary?

    #152 – What is a Carlin Valve and When is it Necessary?
    At the fire scene, the engine company sometimes designates a person to stay with the fire hydrant while the engine and the crew advance on a burning building. QRFS explains how Carlin valves, a displacement-activated hydrant gate valve, can keep the engine company whole while facilitating safe and speedy hydrant activation.

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