The Complete Handbook of Pipe Caps & Plugs

Solid reference for my plumbing supply counter. The material compatibility section alone saved me from recommending the wrong cap to a contractor working on a high-temp heating system. My only complaint is I wish there were more photos of actual installation mistakes—the writing is clear, but seeing what wrong looks like would help newer guys faster.

Finally a handbook that treats pipe caps and plugs like they actually matter. I've been in HVAC for 20 years and found myself reaching for this repeatedly—not for basic stuff, but for the edge cases where you need to know pressure limits, thread compatibility, or why certain sealants fail with certain materials. The troubleshooting chapter alone is worth the price.

This is exactly what I needed before starting my own plumbing supply business. Chapter 6 on brands and business opportunities walks you through the wholesale relationships, margin structures, and service call opportunities in a way that actually makes sense. Wish I'd had this when I was deciding which suppliers to stock.

Excellent practical guide. The chapter on selection is thorough and genuinely helpful when you're standing in front of a system and trying to figure out what you're actually looking at. One thing: I would've appreciated more guidance on quick field diagnostics for older systems where the original cap is long gone and you're guessing at the original specs.

Do yourself a favor and read this before you make your first bulk order or start calling yourself a specialist in this category. The material compatibility rules are non-obvious and this book doesn't waste time with filler—every section tells you something you actually need to know to avoid an expensive mistake or a callback.

Good comprehensive reference, though I felt like some sections assumed more technical background than others. The glossary helps, but I found myself flipping back and forth between chapters to understand the relationship between pressure class, thread type, and sealing method. Solid foundation, just a bit uneven in pacing.

I recommended this to our entire maintenance team after I finished the first two chapters. It's the kind of resource that makes you realize how many small decisions you've been making on intuition rather than actual criteria. The troubleshooting section has already paid for itself in avoided callbacks.

This is the handbook every contractor's van should have. Clear, specific, no marketing nonsense, and it covers the real situations you run into—incompatible threads, sealing failures, material corrosion in specific environments. The business chapter is useful too if you're thinking about building a service line around specialized closures.