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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
    • Flexible Drops
    • 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
    • Mounting and Storage
      • Covers
      • Pin Racks
      • Reels
    • Hose
      • Double Jacket Hose
      • Rack and Reel Hose
      • Single Jacket Hose
    • Hose Adapters and Reducers
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Fire Sprinklers

Window sprinklers

#477 – What Are Window Sprinklers and When Are They Used?

May 20, 2025May 8, 2025

Window sprinklers play a unique role in fire protection, enabling glass to become part of fire-rated barriers. Learn their purpose and rules.

Leave a comment
universal fire sprinkler head wrench

#476 – Can You Use a Universal Fire Sprinkler Head Wrench?

April 28, 2025April 23, 2025

A universal fire sprinkler head wrench seems like a great idea, but NFPA mandates using sprinkler-specific wrenches. Learn why and when this tool might still have a role in your toolbox or sprinkler cabinet.

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Senju sprinkler part numbers

#472 – How to Understand and Use Senju Sprinkler Part Numbers

March 6, 2025February 26, 2025

Fire sprinkler SINs are very useful identifiers, but they don’t tell you everything. Here’s how to read and use Senju Sprinkler part numbers.

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#470 – Lead-Free Fire Sprinklers in Residential Systems: Purpose & Rules

February 13, 2025January 29, 2025

Some residential sprinkler systems require lead-free fire sprinklers and other parts. Learn more about the laws that restrict lead in drinking water and when they apply to fire sprinklers.

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#469 – How to Understand and Use Viking Sprinkler Part Numbers

February 11, 2025January 15, 2025

Fire sprinkler SINs are very useful identifiers, but they don’t tell you everything. Here’s how to read and use Viking sprinkler part numbers.

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Reliable sprinkler part numbers and short codes

#467 – How to Use Reliable Sprinkler Part Numbers & Short Codes

January 24, 2025December 18, 2024

Reliable fire sprinkler part numbers and short codes can help get precisely the right equipment Every fire sprinkler has a SIN, or sprinkler identification number. SINs identify unique sprinkler models according to their K-factor, response … Read more

Tags Part numbers, short codes Leave a comment
Concealed or exposed fire sprinkler

#466 – Can a Single Fire Sprinkler Model (SIN) Be Installed Concealed OR Exposed?

January 24, 2025December 4, 2024

One unique sprinkler identification number (SIN) often indicates whether a sprinkler is a concealed or exposed model. But there are exceptions! Learn about dual-application versions and how to ID and order them properly.

Tags concealed fire sprinklers, fire sprinklers, SIN Leave a comment
Fire sprinkler assembly

#464 – What is a Fire Sprinkler Assembly, and Why Is It Important?

April 22, 2025November 6, 2024

NFPA standards and other documents reference the sprinkler assembly and specify which accessories must be part of it. Read this guide!

Tags cover plates, escutcheons, fire sprinkler assembly, fire sprinkler head assembly, fire sprinklers, sprinkler assembly 1 Comment
Victaulic sprinkler part numbers

#463 – How to Understand and Use Victaulic Sprinkler Part Numbers

March 14, 2025October 23, 2024

Fire sprinkler SINs are very useful identifiers, but they don’t tell you everything. Here’s how to read and use Victaulic sprinkler part numbers.

Tags Victaulic sprinklers Leave a comment
Flush sprinkler escutcheon vs flush sprinkler escutcheon

#462 – “Flush” vs Flush Sprinkler Escutcheons: What Must Be Listed?

January 24, 2025October 9, 2024

The term “flush sprinkler escutcheon” can mean two different things in fire protection, and only one needs a listing. Learn to spot the difference!

Tags Fire Sprinkler Escutcheons, sprinkler escutcheons Leave a comment
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Latest Posts

  • Window sprinklers
    #477 – What Are Window Sprinklers and When Are They Used?
  • universal fire sprinkler head wrench
    #476 – Can You Use a Universal Fire Sprinkler Head Wrench?
  • NFPA 13 2025 changes part 2
    #475 – NFPA 13 2025 Edition: Reviewing Major Changes, Part 2
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