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  • Fire Sprinklers
    • Cover Plates
      • Cover Plate Finder
      • Flat
      • Domed
      • Viking Cover Plates
      • Tyco Cover Plates
      • Reliable Cover Plates
      • Victaulic Cover Plates
      • Senju Cover Plates
      • Cleanroom
    • Escutcheons
      • Escutcheon Finder
      • Recessed
      • Adjustable (401)
      • Split Ring (Retrofit)
      • One Piece
      • Institutional
      • Viking Escutcheons
      • Tyco Escutcheons
      • Reliable Escutcheons
      • Victaulic Escutcheons
      • Senju Escutcheons
      • Vaulted Ceiling
      • Extension Tubes
    • Sprinkler Heads
      • Sprinkler Finder
      • Uprights
      • Pendents
      • Concealed Pendents
      • Horizontal Sidewalls
      • Concealed Sidewalls
      • Residential
      • Standard Response (SR)
      • Quick Response (QR)
      • ESFR, EC, & Other
      • Institutional
      • Viking Fire Sprinklers
      • Tyco Fire Sprinklers
      • Victaulic Fire Sprinklers
      • Reliable Fire Sprinklers
      • Senju Fire Sprinklers
    • Head Wrenches
      • Standard
      • Concealed
      • Recessed
      • Cabinet/Plastic
      • Hybrid and Other
    • Sprinkler Accessories
      • Sprinkler Extensions
      • Installation Tools
      • Trim Rings
      • Spare Head Cabinets
    • Guards and Shields
      • Paint Covers
      • Standard Head Guards
      • Heavy Duty Head Guards
      • Water Shields and Baffles
    • Shut off Tools
      • Shutgun
    • System Components
      • Sprinkler Gauges
      • Flexible Drops
      • Drywall Access Doors
      • Pre-Assembled Risers
      • Cleaning Tools
      • Breakable Locks
  • Pipe
    • CPVC Fittings
      • Caps
      • Couplings
      • Adapters and Reducers
      • Elbows
      • Tees
      • Bushings
      • Pipe
      • Crosses
      • Cement
    • Grooved Fittings
      • Couplings
      • Adapters and Reducers
      • Caps
      • Mechanical Tees
      • Tees
      • Elbows
      • Crosses
      • Coupling Grease
    • Black Iron Fittings
      • Bushings
      • Nipples
      • Square Head Plugs
    • Wall Plates
      • Plastic
      • Metal
      • Galvanized
      • Rod Buttons
    • Installation & Cutting
      • Pilot Clamps
      • Hole Saw Blades
      • Sealants and Greases
      • Boltbreakers
      • Tru Drill
      • Paint Markers
    • Hangers and Fasteners
      • Riser Clamps
      • CPVC Hangers
      • Fasteners and Drivers
      • Beam Clamps
      • Swivel Rings
  • Signs & Decals
    • Sprinkler Signs
      • Aluminum Signs
      • Decals and Stickers
    • FDC Signs
    • Fire Extinguisher Signs
    • Sign Chain
  • Test & Monitor
    • Hydrostatic Test Pumps
    • Smoke Detector Testing
      • Smoke Detector Test Kits
      • Smoke Aerosols and Cartridges
      • Smoke Dispensers
      • Sensitivity Testers
      • Scorpion (Mounted)
    • CO Detector Testing
      • CO Detector Test Kits
      • CO Aerosols and Cartridges
      • CO Dispensers
    • Alarm Testing
      • Battery Testing
      • Duct Detector Testing
      • Sound & Voice Testing
    • Other Detector Testing
      • Heat Detector Test Kits
      • Heat Detector Testers
      • Universal Detector Test Kits
      • Detector Testing Equipment & Accessories
      • Removal and Cleaning
      • Batteries and Chargers
      • Access Poles
    • Gauges
    • Flow Testing
      • Flow Test Kits
      • Pitot Gauge Kits
      • Flow Testing Parts
    • Alarm Bells
      • 24V
      • 120V
      • Alarm Bell Accessories
    • Electronic Supervision
      • Flow Switches
      • Pressure Switches
      • Supervisory Switches
  • FDCs
    • Exposed Bodies
      • Angled
      • Straight
    • Concealed Bodies
      • Angled
      • Straight
    • Caps and Plugs
      • Breakable Caps
      • Plug and Chains
    • Snoots and Swivels
    • Identification Plates
      • Round ID Plates
      • Square ID Plates
      • Auto Spkr ID Plates
      • Standpipe ID Plates
      • Combination ID Plates
    • Residential
  • Valves
    • Butterfly Valves
      • Grooved Butterfly Valves
      • Threaded Butterfly Valves
      • Wafer Butterfly Valves
    • OS&Y Valves
    • Other Control Valves
      • Powerball Valves
      • Gate Valves
    • Shotgun Riser Check Valves
    • Other Check Valves
      • Brass Check Valves
      • In-Line Check Valves
      • Swing Check Valves
    • Angle Valves
    • Testing & Maintenance
      • Pressure Relief Valves
      • Bleeder Valves
      • Three Way Valves
      • Ball Valves
      • Globe Valves
      • Ball Drip Valves
      • Auxiliary Drain Valves
      • Test and Drain Valves
    • Hose Valves
    • Valve Wrenches
      • Post Indicator Valve Wrench
      • Valve Wheel Wrenches
    • Valve Trim Kits
  • Fire Hose & Hydrants
    • Hose Caps
      • Aluminum Cap and Chain
      • Plastic Cap and Chain
      • Brass Cap and Chain
    • Hose Valves
    • Wrenches
    • Hose Nozzles
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      • Covers
      • Pin Racks
      • Reels
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      • Double Jacket Hose
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      • Single Jacket Hose
    • Hose Adapters and Reducers
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VK4621 and VK4921 fire sprinklers

#397 – The VK4621 and VK4921: Meet Viking’s Latest Concealed XT-1 Pendent Sprinklers

November 10, 2021

Viking’s newest concealed pendent sprinklers, the VK4621 & VK4921, can be installed with their caps in place—learn how and other benefits.

Read More
Viking cover plates

#396 – Viking’s Latest Thread-On Concealed Sprinkler Cover Plates

October 26, 2021

Viking’s newest concealed fire sprinkler cover plate threads into place Viking launched a new thread-on cover plate for concealed fire sprinklers. These covers are designed … Read more

Read More

#395 – Fire and Building Codes for Senior Housing and Other Facilities

October 12, 2021

Learn about the fire code requirements for residential board and care occupancies, including senior housing and other facilities.

Read More
Fire sprinkler save

#394 – Thank You for Fire Protection: The Victory Centre of Park Forest

September 29, 2021

Learn how a working sprinkler system in a senior community stopped a cooking fire in its tracks, saving lives and property.

Read More
Storage sprinklers

#393 – The Basics of CMDA, CMSA, In-Rack, and ESFR Storage Sprinklers

September 14, 2021

Learn how storage fire sprinklers like CMDA, CMSA, and ESFR models protect challenging warehouse environments from fires.

Read More
Fire pump

#392 – How To Size a Fire Pump and the Basics of Performance Curves

August 31, 2021

Fire pumps are vital equipment for fire sprinkler systems. Learn how to read a fire pump performance curve and size a fire pump.

Read More
Dirty fire sprinkler

#391 – How to Tell if Your Fire Sprinklers Need Cleaning or Replacement

August 17, 2021

Dirty fire sprinklers are a common code compliance problem. Learn how and when to clean fire sprinklers to stay safe and pass inspection.

Read More
QR vs SR Viking sprinklers

#390 – The Difference Between Standard, Residential & Quick Response Sprinklers

August 3, 2021

Learn what’s unique about standard and quick response sprinklers, along with how residential sprinklers differ from both—even though many people confuse the terms.

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#389 – How to Select a Pipe Cover Plate: Understanding IPS Dimensions

July 21, 2021

Nominal size is not *actual* size. If you forget this, you’ll end up with components that don’t match. QRFS explains how IPS and other measurements relate to actual size.

Read More
home fire safety plan

#388 – A Home Fire Safety Checklist and Planning Guide

July 6, 2021

Use this checklist to prepare for and prevent house fires. Fire safety depends on planning, prevention, & tools like smoke alarms & fire extinguishers.

Read More
Extended coverage sprinkler spacing obstructions

#387 – Extended Coverage Sprinkler Spacing Part 2: Obstructions

June 22, 2021

In part 2 of our series on fire sprinkler spacing for extended coverage sprinklers, QRFS looks at the rules for avoiding obstructions.

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