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NICET ITWBS Levels I and II, One Drawing per Concept With Every Valve, Gauge and Test Drawn Step by Step!

Wet and dry systems, sprinklers, control valves, gauges, the main drain test, fire pumps, tanks, obstructions and impairments: in your notes it's a wall of text. Here every topic fits on one page, with the drawing, what you need to remember and where to check it in NFPA 25 (2023). Organized around the outlines updated June 2, 2025. 65 illustrated pages.

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One topic per pagethe drawing shows you the valve or the test, and the text goes with it
65 illustrated pages11 parts, from the ITWBS exam to the exam day checklist
Up-to-date sourcesNICET ITWBS outlines (June 2025), NFPA 25 (2023) and OSHA 29 CFR 1910

This Is What the Pages You Will Study Look Like

One topic per page, the drawing that shows you how it's done and the boxes with what you need to know:

Level I: 115 questions, 125 min · Level II: 168 questions, 185 min
Level I: 115 questions, 125 min · Level II: 168 questions, 185 min
Head 1910.135, eyes 1910.133, feet 1910.136, hands 1910.138, hearing 1910.95
Head 1910.135, eyes 1910.133, feet 1910.136, hands 1910.138, hearing 1910.95
Wet pipe riser: control valve, alarm check valve, two gauges, water up to every sprinkler.
Wet pipe riser: control valve, alarm check valve, two gauges, water up to every sprinkler.
Pendent and upright cut away: frame, deflector, orifice, bulb or link, cap
Pendent and upright cut away: frame, deflector, orifice, bulb or link, cap
OS&Y, PIV, WPIV and butterfly drawn side by side: stem out = open.
OS&Y, PIV, WPIV and butterfly drawn side by side: stem out = open.
Main drain test in 6 drawn steps: static, residual, return to static, compare.
Main drain test in 6 drawn steps: static, residual, return to static, compare.
Wet riser drawn with 4 checkpoints: gauges, alarm valve, trim and the high-point air vent.
Wet riser drawn with 4 checkpoints: gauges, alarm valve, trim and the high-point air vent.
Suction to discharge: eight components, one flow arrow, one drawing to keep at hand.
Suction to discharge: eight components, one flow arrow, one drawing to keep at hand.

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These are real pages from the book. The table of contents is the full one: 11 parts and 61 topics.

It's Not That You Have a Bad Memory. It's That Nobody Put It in Order.

You've read the section on wet pipe systems three times. You close your notes...

...and you can't say what sits on the riser, or in what order. It was just lines of text, one after another.

Wet pipe riser: control valve, alarm check valve, two gauges, water up to every sprinkler.

Here the wet pipe system is one drawn riser, bottom to top: the control valve, the alarm check valve, the two gauges and water all the way up to every sprinkler.

And on the pages next to it, every system has its own: dry pipe, preaction and deluge, foam-water, standpipes and water supplies.

First you understand why it's built that way. Then the order sticks on its own.

SEE THE DIFFERENCE

Stop Memorizing Valves and Tests You Can't Picture:

THIS
  • Pages and pages of tight text
  • Valves and tests without a single drawing
  • On exam day, you don't know where to start
To perform the main drain test, the static pressure is first read and recorded at the system gauge, after which the main drain valve is fully opened and allowed to flow until the pressure stabilizes, at which point the residual pressure is read and recorded; the drain valve is then closed slowly, the time it takes for the gauge to return to the original static pressure is noted, and the readings obtained are compared against the results of previous tests in order to identify any change in the condition of the water supply piping or the control valves, with any significant difference requiring further investigation.
FOR THIS
  • Every valve and test drawn
  • One topic per page, with the rules in boxes
  • You remember it because you've seen it
Head 1910.135, eyes 1910.133, feet 1910.136, hands 1910.138, hearing 1910.95
CONTENTS

Take a Look at the 11 Parts and 61 Topics

The exam, jobsite safety, system types and water supplies, sprinklers and piping, valves and alarms, Level I field tasks, wet, dry and standpipe ITM, fire pumps, tanks and mains, obstructions and impairments, and a final review: 65 pages, all drawn

IThe ITWBS Exam · pp. 5-9
  1. How ITWBS Levels I and II Work
  2. Level I Content Domains and Weights
  3. Level II Content Domains and Weights
  4. Your References: NFPA 25 and More
  5. Experience, Fees and Testing Rules
IIJobsite Safety · pp. 10-14
  1. PPE for Inspection Work
  2. Lockout/Tagout Basics
  3. Confined Spaces, Ladders and Lifts
  4. Tools, Test Gear and GFCI
  5. Recognizing Safety Impairment Issues
IIISystem Types and Water Supplies · pp. 15-20
  1. Wet Pipe Systems
  2. Dry Pipe Systems
  3. Preaction and Deluge Basics
  4. Foam-Water and Special Systems
  5. Standpipe System Classes and Types
  6. Water Supplies: City, Pumps and Tanks
IVSprinklers and Piping · pp. 21-25
  1. Sprinkler Anatomy and Response Types
  2. Reading Sprinkler Markings and Age
  3. Annual Floor-Level Sprinkler Inspection
  4. Sprinkler Replacement and Lab Testing
  5. Pipe, Fittings, Hangers and Bracing
VValves, Gauges and Alarm Devices · pp. 26-32
  1. Control Valves: OS&Y, PIV, WPIV, Butterfly
  2. Exercising and Checking Valve Position
  3. Drain and Test Valves
  4. Reading and Replacing Gauges
  5. Waterflow Alarms: Vane, Pressure, Gong
  6. Supervisory and Trouble Signals
  7. Fire Department Connections
VILevel I Field Tasks and Records · pp. 33-38
  1. Performing a Main Drain Test
  2. Testing Waterflow Alarms
  3. Flushing Hydrants
  4. Exercising Hose Connections
  5. Inventory and Component Records
  6. Preparing Preliminary Reports
VIIWet, Dry and Standpipe ITM · pp. 39-44
  1. Wet System ITM and Air Vents
  2. Antifreeze Solution Testing
  3. Dry Valve Trip Tests
  4. QODs, Compressors and Nitrogen
  5. Standpipe ITM and Flow Tests
  6. Pressure-Reducing Valves
VIIIFire Pumps · pp. 45-50
  1. Fire Pump Assembly and Controllers
  2. Weekly and Monthly No-Flow Tests
  3. Annual Fire Pump Flow Test
  4. Reading the Pump Curve
  5. Relief Valves and Jockey Pumps
  6. Diesel vs. Electric Driver Checks
IXTanks, Hydrants and Private Mains · pp. 51-55
  1. Water Storage Tank Inspections
  2. Tank Heating and Water Temperature
  3. Private Fire Service Mains
  4. Hydrant Flow Testing (NFPA 291)
  5. Backflow Preventer Forward-Flow Tests
XObstructions, Deficiencies and Impairments · pp. 56-61
  1. When an Obstruction Investigation Is Needed
  2. Internal Pipe Assessment Steps
  3. MIC, Scale and Foreign Material
  4. Critical, Noncritical and Impaired
  5. Planned vs. Emergency Impairments
  6. Communicating With Owners and AHJs
XIFinal Review · pp. 62-65
  1. Frequent Mix-Ups
  2. Quick Math: Percent Drop and Pressure
  3. Frequency Cheat Sheet
  4. Exam Day Checklist

What If Every Topic Fit on a Single Page?

Imagine this:

Instead of rereading half a page about control valves without being able to picture them...

...you open the page and find the OS&Y, the PIV, the WPIV and the butterfly valve drawn side by side, with stem out = open.

OS&Y, PIV, WPIV and butterfly drawn side by side: stem out = open.

And the main drain test, dry valve trip tests, the fire pump curve, tank inspections and impairments turn into drawings and tables you can read at a glance.

You stop repeating and start understanding.

That's exactly what Water-Based Systems Sketchbook: ITWBS does. It's not “just another manual.” It's 11 parts and 61 drawn topics, and at the end a final review with frequent mix-ups, quick math, a frequency cheat sheet and an exam day checklist.

Because what your brain sees organized, it remembers.

Here Is What You Get with Water-Based Systems Sketchbook: ITWBS:

Ipp. 5-9

The ITWBS Exam

How Levels I and II work, the content domains and weights, your references, experience, fees and testing rules.

IIpp. 10-14

Jobsite Safety

PPE with its OSHA sections, lockout/tagout, confined spaces, ladders and lifts, test gear and GFCI, and safety impairments.

IIIpp. 15-20

System Types and Water Supplies

Wet, dry, preaction, deluge and foam-water systems, standpipe classes and types, and water supplies from the city main, pumps and tanks.

IVpp. 21-25

Sprinklers and Piping

Sprinkler anatomy and response types, reading markings and age, the annual floor-level inspection, replacement and lab testing, and pipe, hangers and bracing.

Vpp. 26-32

Valves, Gauges and Alarm Devices

OS&Y, PIV, WPIV and butterfly valves, checking valve position, drain and test valves, gauges, waterflow alarms, supervisory and trouble signals, and FDCs.

VIpp. 33-38

Level I Field Tasks and Records

The main drain test, waterflow alarm tests, hydrant flushing, hose connections, inventory records and preliminary reports.

VIIpp. 39-44

Wet, Dry and Standpipe ITM

Wet system ITM and air vents, antifreeze testing, dry valve trip tests, QODs, compressors and nitrogen, standpipe flow tests and pressure-reducing valves.

VIIIpp. 45-50

Fire Pumps

The pump assembly and controllers, weekly and monthly no-flow tests, the annual flow test, the pump curve, relief valves, jockey pumps and diesel vs. electric checks.

IXpp. 51-55

Tanks, Hydrants and Private Mains

Tank inspections, tank heating and water temperature, private fire service mains, hydrant flow testing per NFPA 291 and backflow forward-flow tests.

Xpp. 56-61

Obstructions, Deficiencies and Impairments

When an obstruction investigation is needed, internal pipe assessment, MIC and scale, critical vs. noncritical vs. impaired, planned and emergency impairments, and talking to owners and AHJs.

XIpp. 62-65

Final Review

Frequent mix-ups, quick math for percent drop and pressure, a frequency cheat sheet and an exam day checklist.

At the end of the book: A final review with frequent mix-ups, quick math, a frequency cheat sheet and an exam day checklist.

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And That Is Not All: 2 More Books, Free

ITM Frequency Lookup Sheets

BONUS 1: «ITM Frequency Lookup Sheets»

Value on its own: US$ 17.90

A routine you can repeat to find each inspection, test and maintenance task in your NFPA 25 (2023) fast, with the frequencies from the book on one sheet and no code text copied.

250 ITWBS Terms on Cards

BONUS 2: «250 ITWBS Terms on Cards»

Value on its own: US$ 14.90

Review the vocabulary in short sessions: the term on the front, a one-line definition and a small sketch on the back, ready to print and carry.

Water-Based Systems Sketchbook: ITWBS + 2 Free Books

  • Water-Based Systems Sketchbook: ITWBS: 65 illustrated pagesUS$ 63
  • BONUS 1: ITM Frequency Lookup SheetsUS$ 17.90
  • BONUS 2: 250 ITWBS Terms on CardsUS$ 14.90
  • High-resolution PDF to printIncluded
Total value US$ 95.80
YOUR PRICE:
US$ 27
You save US$ 68.80
YES, I WANT WATER-BASED SYSTEMS SKETCHBOOK: ITWBS FOR US$ 27

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PDF by email: Water-Based Systems Sketchbook: ITWBS reaches your inbox as a PDF, and the two free books come by email too. One-time payment, no installments or hidden costs.

Is This Book for You?

You're a Level I trainee

You're a Level I trainee

Valves, gauges, alarms and the main drain test, one page each, to review between jobs while you work under supervision.

Your Level II exam is coming up

Your Level II exam is coming up

Dry systems, standpipes, fire pumps, tanks and impairments in the order of the official outline, with where to check in NFPA 25 (2023). Retaking it? Go straight to the domains on your score report.

You already work in fire protection

You already work in fire protection

Moving from fitting to inspection, or just want a quick visual review of the tasks you do every day? Print it and keep it in the truck.

To Sum Up: Here Is What You Get

US$ 95.80US$ 27
YES, I WANT WATER-BASED SYSTEMS SKETCHBOOK: ITWBS FOR US$ 27

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

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30-Day Guarantee

30-day guarantee: tell us what didn't work and we'll refund 100%.

You have 30 days to try Water-Based Systems Sketchbook: ITWBS and the two bonus books. If it doesn't help you study, tell us what didn't work and we'll refund 100% of what you paid. One-time payment, no subscription.

Frequently Asked Questions

How do I get the material?

After you pay, you'll get an email at the address you enter at checkout with Water-Based Systems Sketchbook: ITWBS as a high-resolution PDF, to read on your phone or print. The two bonus books, ITM Frequency Lookup Sheets and 250 ITWBS Terms on Cards, come by email too. Don't see it? Check your spam folder or write to us.

Is it a monthly or a one-time payment?

A single one-time payment. No installments and no subscription.

Who is it for?

For anyone preparing for NICET ITWBS Level I or II. If you're new, the Level I topics start from the basics: what each valve, gauge and test is, drawn. If you already work in the field, it's a fast visual review in the order of the official outlines. Retaking a level? Go straight to the domains where your score report came in lowest. Check the table of contents above to see every topic.

What sources is it based on?

On the NICET ITWBS Level I and Level II content outlines (updated exam released June 2, 2025), NICET's candidate information, NFPA 25 (2023 edition), NFPA 291 for hydrant flow testing and OSHA 29 CFR 1910 for safety. Each page names the NFPA 25 (2023) section to check, and when a number isn't verified, the page says "check NFPA 25 (2023)" instead of guessing.

Is it official NICET or NFPA material?

No. It's independent study material, not affiliated with or endorsed by NICET or NFPA. It doesn't give you a certificate and doesn't count toward NICET certification or work experience: only NICET certifies. It uses no logos and reproduces no code text, tables or figures: every drawing is our own.

Does it replace NFPA 25 or my training?

No. You still need the reference editions NICET lists for your exam, and it doesn't replace on-the-job training, supervision, manufacturer instructions, company procedures or the authority having jurisdiction. It helps you see each topic and know where to look.

Are the practice questions the real exam questions?

No. The book and the two bonus books don't include exam questions. If you add the optional Level I or Level II Practice Sets at checkout, those questions are original, written for this material, and explained one by one. They are not official NICET questions.

Can I print it?

Yes. It's a high-resolution PDF: print the whole book or just the pages you need and keep them in the truck or next to your NFPA 25.

What if I don't like it?

30-day guarantee: tell us what didn't work and we'll refund 100%.

One Last Thing Before You Decide...

You don't have to reread the same page hoping it sticks this time.

You don't have to memorize valves and tests you can't picture.

And you definitely don't have to walk into the test center not knowing where to start.

There's an easier way. And it's one click away. Now it's your turn.

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

YES, I WANT WATER-BASED SYSTEMS SKETCHBOOK: ITWBS FOR US$ 27

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