Launch offer — valid today only

📄 Digital book in PDF · read it on your phone or print it

Fire Sprinklers and NFPA 25 Inspections in Drawings Know What Every Valve Does and How Often Each Item Gets Checked

Sprinkler heads, the 4 system types, the riser valve by valve, NFPA 25 frequencies, the main drain test and impairments. One topic per page: the drawing first, then what to remember. 64 illustrated pages.

START STUDYING THIS WAY

🔒 Secure checkout · PDF by email · 30-day guarantee

Every topic, its own pageEvery part, system and test drawn, with the explanation right beside it
64 illustrated pages8 parts, from how a sprinkler system works to the one-page riser walk-through
Up-to-date sourcesChecked against NFPA 13 (2025 edition) and NFPA 25; the edition used is named inside the book. Your AHJ's adopted edition always rules.
PDF by emailFormat

Look Inside the Book

Every page has one big drawing and a box with the numbers, steps and frequencies you need to know:

Each head is its own heat detector: only the heads over the fire flow.
Each head is its own heat detector: only the heads over the fire flow.
6 spares under 300 heads, 12 up to 1,000, 24 above: plus wrenches and the posted list.
6 spares under 300 heads, 12 up to 1,000, 24 above: plus wrenches and the posted list.
Four systems in one view: what fills the pipe, what opens the valve, what the heads look like.
Four systems in one view: what fills the pipe, what opens the valve, what the heads look like.
FDC: listed check valve, AUTOSPKR sign in 1-in. raised letters
FDC: listed check valve, AUTOSPKR sign in 1-in. raised letters
Static = no flow · Residual = while flowing · Flow in gpm (example: 70 / 50 psi at 1,000 gpm)
Static = no flow · Residual = while flowing · Flow in gpm (example: 70 / 50 psi at 1,000 gpm)
Component, activity, frequency, reference: one table row, one checklist line.
Component, activity, frequency, reference: one table row, one checklist line.
Notify, tag, record, restore: the 4 steps around every NFPA 25 test
Notify, tag, record, restore: the 4 steps around every NFPA 25 test
Deficiency, critical deficiency, impairment: the three NFPA 25 terms, each drawn as a real example.
Deficiency, critical deficiency, impairment: the three NFPA 25 terms, each drawn as a real example.

Swipe to see more →

These are real pages from the book. The table of contents is the full one: 8 parts and 60 topics.

The Problem Isn't You. It's How It Was Explained to You.

You're on a job with a pre-action system and the foreman asks two things: what's in the pipe right now, and what opens the valve. You know you studied this.

The manual covers wet, dry, pre-action and deluge in four separate chapters, pages apart, all in paragraphs. Nothing puts the four next to each other, so they blur together.

Four systems in one view: what fills the pipe, what opens the valve, what the heads look like.

In the book, the four systems are drawn in the same view on one page: what fills the pipe, what opens the valve, what the heads look like. You see what changes in one look.

The same goes for the wet riser with its 9 numbered parts, the glass bulb breaking, static vs. residual pressure, the NFPA 25 frequency table and the steps before any test. Each one has its own page.

You answer the foreman, and on the next job you do it without opening the manual again.

COMPARE FOR YOURSELF

Same Topic, Two Ways to Study It

THIS
  • The manual: line after line of text
  • Frame, orifice, cap and deflector explained only in words
  • You walk into the exam or the inspection with doubts
A standard automatic sprinkler consists of a frame which supports an orifice through which water is discharged upon operation, said orifice being held closed by a cap or seal assembly maintained in position by a heat-responsive element, which may be a frangible glass bulb containing a liquid or a fusible solder link. Upon reaching its rated temperature, the element releases, the cap is ejected by water pressure, and the discharge strikes the deflector, which distributes water in a pattern determined by sprinkler type.
FOR THIS
  • The whole sprinkler in one exploded drawing
  • The parts and where the stamps are, in a box
  • You see it and you get it
6 spares under 300 heads, 12 up to 1,000, 24 above: plus wrenches and the posted list.
CONTENTS

Take a Look at the 8 Parts and 60 Topics

How a system works, the sprinkler head, the four system types, the riser valve by valve, water supply, inspection frequencies, tests step by step, and deficiencies and impairments: 64 pages, all illustrated

IHow a Sprinkler System Works · pp. 5-11
  1. Only the Heads Over the Fire Open
  2. From the Street to the Head: The Water Path
  3. Mains, Cross Mains and Branch Lines
  4. NFPA 13 vs NFPA 25: Who Does What
  5. Inspection, Test, Maintenance: Three Different Words
  6. Occupancy Hazard Classes
  7. Who Is Responsible: Owner, Contractor, AHJ
IIThe Sprinkler Head · pp. 12-19
  1. Anatomy of a Sprinkler
  2. How the Glass Bulb Breaks
  3. Bulb Colors and Temperature Ratings
  4. Fusible Link Sprinklers and Frame Colors
  5. Pendent, Upright, Sidewall, Concealed
  6. K-Factor: How Much Water a Head Delivers
  7. Spray, Extended Coverage, ESFR, Residential
  8. The Spare Sprinkler Cabinet
IIIWet, Dry, Pre-Action and Deluge Side by Side · pp. 20-27
  1. The Four Systems in the Same View
  2. Wet Pipe System
  3. Dry Pipe System
  4. Inside the Dry Pipe Valve: The Differential
  5. Quick-Opening Devices and Pitch
  6. Pre-Action: Single, Double and Non-Interlock
  7. Deluge System
  8. Antifreeze Systems
IVThe Riser, Valve by Valve · pp. 28-35
  1. The Wet Riser Labeled
  2. Control Valves: OS&Y, Butterfly, PIV
  3. Sealed, Locked or Supervised Valves
  4. The Two Gauges: Supply vs System
  5. Waterflow Alarms: Vane Switch, Pressure Switch, Gong
  6. The Fire Department Connection
  7. The Dry Riser Labeled
  8. Backflow Preventer on the Fire Line
VWater Supply and Basic Hydraulics · pp. 36-41
  1. Static, Residual and Flow
  2. Pressure Lost to Height
  3. Pressure Lost to Friction
  4. Density and Design Area
  5. Hose Stream Allowance and Duration
  6. The Fire Pump in One Page
VIInspection Frequencies as Checklists · pp. 42-49
  1. How to Read an NFPA 25 Frequency Table
  2. Weekly and Daily Items
  3. Monthly Items
  4. Quarterly Items
  5. Semiannual Items
  6. Annual Items
  7. Five-Year Items
  8. When Sprinklers Must Be Replaced or Tested
VIITests, Step by Step · pp. 50-57
  1. Before Any Test: Notify, Tag, Record
  2. The Main Drain Test in Order
  3. Reading the Main Drain Result
  4. The Inspector's Test Connection
  5. Dry Pipe Valve: Partial Trip Test (Annual)
  6. Dry Pipe Valve: Full Trip Test (Every 3 Years)
  7. Resetting a Dry Pipe Valve
  8. Antifreeze Concentration Test
VIIIDeficiencies, Impairments and Review · pp. 58-64
  1. Deficiency, Critical Deficiency, Impairment
  2. Heads That Must Be Replaced, Never Cleaned
  3. Obstructions and the 18-Inch Rule
  4. Escutcheons, Cover Plates and Hangers
  5. Corrosion and MIC in the Pipe
  6. Handling an Impairment
  7. Riser Walk-Through: One-Page Review

One Page, One Topic, All Clear

Think of it this way:

It's 7 a.m. in the riser room and you have to run the main drain test before the insurance inspector shows up. You need the steps in order, not a table.

You open the book to the main drain test and see the riser drawn, with the drain valve and the supply gauge marked, and the steps numbered: note the static pressure, open the drain fully, read the residual, close it slowly, wait for the pressure to come back, then compare with the last test. One page, one order, every time.

Static = no flow · Residual = while flowing · Flow in gpm (example: 70 / 50 psi at 1,000 gpm)

Same with the dry pipe valve, the bulb colors, OS&Y vs. PIV, the quarterly items and the 18-inch rule: each one on its own page.

Fire Sprinkler Systems Illustrated is 8 parts and 60 topics, all drawn, plus 2 bonus books: exam-style practice questions and before/after deficiency sheets.

What you see drawn, you don't have to memorize.

What's Inside Fire Sprinkler Systems Illustrated:

Ipp. 5-11

How a Sprinkler System Works

Only the heads over the fire open, the water path from the street to the head, mains and branch lines, NFPA 13 vs. NFPA 25, hazard classes and who is responsible.

IIpp. 12-19

The Sprinkler Head

Anatomy of a sprinkler, how the glass bulb breaks, bulb and frame colors, pendent, upright, sidewall and concealed, K-factor, ESFR and the spare cabinet.

IIIpp. 20-27

Wet, Dry, Pre-Action and Deluge Side by Side

Wet, dry, pre-action and deluge in the same view, inside the dry pipe valve, quick-opening devices and pitch, and antifreeze systems.

IVpp. 28-35

The Riser, Valve by Valve

The wet riser labeled, OS&Y, butterfly and PIV, supervised valves, the two gauges, waterflow alarms, the FDC, the dry riser and the backflow preventer.

Vpp. 36-41

Water Supply and Basic Hydraulics

Static, residual and flow, pressure lost to height and friction, density and design area, hose stream allowance and the fire pump in one page.

VIpp. 42-49

Inspection Frequencies as Checklists

How to read an NFPA 25 frequency table, then the weekly, monthly, quarterly, semiannual, annual and five-year items as checklists, and when heads must be replaced or tested.

VIIpp. 50-57

Tests, Step by Step

Notify, tag and record, the main drain test in order and how to read it, the inspector's test, partial and full trip tests, resetting a dry valve and the antifreeze test.

VIIIpp. 58-64

Deficiencies, Impairments and Review

Deficiency, critical deficiency and impairment, heads to replace, the 18-inch rule, escutcheons and hangers, corrosion and MIC, handling an impairment and a one-page riser walk-through.

At the end of the book: A one-page riser walk-through at the end to review everything.

Plus: 2 Free Books

Sprinkler Inspection Practice Questions: Exam-Style, With Answers Explained

BONUS 1: «Sprinkler Inspection Practice Questions: Exam-Style, With Answers Explained»

Value on its own: US$ 17.90

Test yourself on system types, riser parts and ITM frequencies, and see why each answer is right before the real exam or inspection.

Common Sprinkler Deficiencies: Before & After Quick Sheets

BONUS 2: «Common Sprinkler Deficiencies: Before & After Quick Sheets»

Value on its own: US$ 14.90

Painted heads, missing escutcheons, blocked heads, corrosion: spot each one at a glance and know how it gets corrected.

Fire Sprinkler Systems Illustrated with 2 Free Books

  • Fire Sprinkler Systems Illustrated: 64 illustrated pagesUS$ 63
  • BONUS 1: Sprinkler Inspection Practice Questions: Exam-Style, With Answers ExplainedUS$ 17.90
  • BONUS 2: Common Sprinkler Deficiencies: Before & After Quick SheetsUS$ 14.90
  • High-resolution PDF to printIncluded
Total value US$ 95.80
YOUR PRICE:
US$ 27
You save US$ 68.80
YES, I WANT FIRE SPRINKLER SYSTEMS ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.

Secure purchaseEncrypted payment30-day guarantee

PDF by email: We email you Fire Sprinkler Systems Illustrated as a PDF, together with the two free books. It's a single payment: no installments, no extra charges.

Who This Book Is For

You're a sprinkler fitter apprentice

You're a sprinkler fitter apprentice

Coming from plumbing or construction, you get the four system types and the riser drawn part by part, so the new names finally connect.

Your inspection certification is coming up

Your inspection certification is coming up

Every ITM item as a checklist, weekly to annual, and the tests in numbered steps, to review at night or on the weekend.

You already run the building

You already run the building

When the inspector or the insurance company comes, you know what gets checked, how often and what a deficiency looks like. Print the pages and keep them in the truck.

Everything You Get Today

US$ 95.80US$ 27
YES, I WANT FIRE SPRINKLER SYSTEMS ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.

30DAYS
GUARANTEE

30-Day Guarantee

Try Fire Sprinkler Systems Illustrated for 30 days, bonus books included.

We refund everything if the file won't open, if the book isn't what you see here, if you were charged twice or if the email doesn't arrive. Just email us.

You pay once. No subscriptions.

Frequently Asked Questions

Is it for me if I already do inspections, or if I'm coming from plumbing?

Yes. It follows the inspection, testing and maintenance topics for water-based fire sprinkler systems in the U.S.: system types, the riser, NFPA 25 frequencies, tests and impairments. It is not an official prep course and isn't affiliated with any certifying body, so check which editions your exam references. If you already work in the field, it puts what you know in order and in drawings.

Where does the content come from?

It's checked against NFPA 13 (2025 edition) and the current edition of NFPA 25. Your local authority having jurisdiction (AHJ) may adopt a different edition: always follow the one it adopts.

Is this official material?

No. It's independent study material. It is not affiliated with or endorsed by NFPA, NICET or any authority, and it doesn't come with a certificate or continuing education credits.

Does it replace a training course or the standard?

No. It explains the topics with drawings to help you study and review. It doesn't replace the standard, your training or on-the-job supervision.

Are the practice questions the ones on the exam?

No. They're written for this book to help you practice. They are not official questions from any exam.

When and how do I get it?

As a PDF by email, at the address you enter at checkout.

Do I have to pay every month?

No. It's a one-time payment.

Can I have it on paper?

Yes. The PDF is printable: print the whole book or just the pages you want to keep in the truck.

How does the refund work?

You have 30 days. We refund everything if the file won't open, if the book isn't what you see on this page, if you were charged twice or if the email doesn't arrive: just email us.

Before You Close This Page

No more rereading without anything sticking.

The riser, valve by valve: you see it drawn and that's it.

You get to the exam or the inspection knowing where everything is.

Drawings make studying faster.

The book is right below.

One-time payment: US$ 27 · Guarantee: 30 days · PDF by email

YES, I WANT FIRE SPRINKLER SYSTEMS ILLUSTRATED FOR US$ 27

📄 This is a digital PDF book sent to your email: nothing is printed or shipped.