Who This Checklist Is For

I'm a procurement manager at a roughly 250-person fluid handling distributor. I've managed our valve purchasing budget — about $1.4M annually — for six years, negotiated with 40+ suppliers, and logged every order in our cost tracking system. Most of that spend is globe valves. A large chunk of it is carbon steel.

This checklist is for the buyer who has to approve a carbon steel globe valve order and doesn't want to eat a surprise three months later. Seven steps. None of them are exotic. Two of them get skipped constantly.

If you're still deciding between valve types, start somewhere else. This assumes you've already settled on a globe valve — usually because you need throttling or tight shutoff and you're willing to pay the pressure drop for it. The globe valve vs. ball valve question is genuinely a flow-characteristic question, not a “which one is better” question. Both are fine. They do different jobs. If someone tells you one is universally superior, they're selling you something.

Step 1: Lock the Operating Data Before You Send a Single RFQ

Your spec sheet needs to carry all of this before it leaves your desk: media and concentration, solids content, design pressure, design temperature, size and class, end connection and facing (RF or RTJ), operator type (handwheel, gear, actuator), and — if you're throttling — the flow characteristic you actually need.

Most RFQs go sideways here. A supplier can't meaningfully quote “2 inch carbon steel globe valve” because the class floats between 150 and 900 and the price moves with it. Temperature range changes the trim and sometimes the body material. Even a rough Cv estimate (state it as estimated if it is) cuts a round trip out of the process.

I keep a separate one-page data sheet and attach it to the RFQ. The engineer filling it out does it in ten minutes. Sales can't improvise around it. Roughly, that one change cut our quote-revision rate in half.

Step 2: Separate Manufacturers From Traders — Ask the Right Questions

“Globe valve supplier” can describe anything from a foundry with its own pattern shop to a website and a freight forwarder. Both can be legitimate partners. They carry different price structures, different lead-time risk, and very different support when something goes wrong.

Questions that actually draw a line between the two:

  • Where is the casting poured? (Ask for the foundry name, not the country.)
  • Where is machining, assembly, and testing done?
  • When was the last third-party factory audit, and can I see the report?
  • What's your bottleneck when capacity tightens?
  • Can you send a video of the shop today?

Someone who's actually manufacturing answers the capacity question directly and specifically. A trader usually goes vague or repeats brochure language. At least, that's been my experience.

To be fair, I'm not saying traders are bad. Two of our best-performing suppliers are traders. But they're well-organized traders — they'll tell you which factory runs which job, and they'll say so in writing. What burns you is the trader pretending to be a factory.

Step 3: Put the Standard in the Spec, Not in a Follow-Up Email

Design standard (ASME B16.34 is the common reference for steel valves), test standard (API 598 is the usual citation for pressure testing), and flange standard (ASME B16.5) all belong in the written specification, not in an email thread you'll never find again.

The part that actually matters: say which documents get delivered, how many copies, and when. If you chase the test reports after the goods ship, you've given away your leverage. Put it in the PO.

Also verify which revision of each standard your project actually requires. Standards get revised, and your customer's contract may still cite an older one. Do not copy last year's spec “because that's how we did it.” I did that once and had to renegotiate a locked quote. Not a fun call.

Step 4: Trace the Material — “Carbon Steel” Is Not a Specification

“Carbon steel” covers a lot of ground. WCB is the standard cast grade. WCC is the low-temperature variant. A105 is the forging grade. They are not interchangeable, and they are not the same price.

Write these into the contract: material test reports required, heat number required on carbon steel, and heat numbers must match between the MTR and the test report. Don't accept “material meets ASTM” as a substitute. That's a claim, not a traceable record. You can't audit it later.

One that cost me a lesson: we once received an MTR that didn't match the tag on the physical valves. Turned out to be a filing mix-up at the supplier's end. We caught it early enough that it wasn't a real problem. Since then, heat number verification is part of our receiving inspection, no exceptions.

Step 5: Do the TCO Math, Not the Unit Price Math

This is the one I'd tattoo on the wall if I could. Unit price tells you maybe half the story. Sometimes less.

For carbon steel globe valves, my estimating sheet adds: unit price, test/certification fees (some factories bill separately for a hydro test report), third-party inspection, packaging type (wooden crates vs. cartons makes a real difference in how flanges arrive), freight, inbound inspection time, and failure cost — replacement, downtime, re-shipment.

A real example from a quote comparison. Two suppliers, 2-inch class 150 carbon steel globe valves. One quoted $186 each. The other quoted $172 each. Sixty units — a $840 gap on paper. But the $172 supplier billed $120 for test documentation, shipped in cartons (six valves arrived with damaged seating faces on the previous order), and wanted extra for the material certificates. Real difference in total landed cost: closer to $110.

The “lowest quote wins” thinking comes from an era when valve catalogs were standardized to the point that every factory produced essentially the same thing, on six-month lead times, with a one-page spec nobody questioned. That's changed. The same written spec now produces meaningfully different product across factories — mostly in testing, packaging, and documentation control — and you typically don't see the difference until the goods land.

Step 6: Demand the Document Package Up Front

Make the document package a condition of delivery, not a follow-up request. For carbon steel globe valves, that generally means:

  • Material test reports with heat numbers
  • Hydrostatic test reports per the standard cited in your spec
  • Dimensional inspection records
  • Coating or paint specification
  • Certificate of origin
  • Third-party inspection report (if contracted)
  • Packing list with net and gross weight per crate

Some suppliers treat documents as leverage — they hold them until you pay the balance. Others just get behind and hope you forget. Both problems disappear if the PO says the shipment is incomplete without the document set. That reads harsh. It also ends the argument.

And “with the shipment” means with the shipment. Not three months later when you're trying to clear customs or satisfy an end user's audit.

Step 7: Ask the Supplier What They're Not Good At

Most buyers never do this. Ask the question directly: “What aren't you good at?”

The vendor who answered “large-bore forged construction isn't our strength — you'd be better served by a shop that specializes in it” earned steady volume from us for the next year-plus. Honestly, we were on the fence about giving them a trial order at all before that answer.

I'd rather work with a specialist who knows their limits than a generalist who promises everything. The difference isn't capability. It's willingness to say “not our lane” and point you somewhere better — and that same instinct usually shows up elsewhere in the relationship, in places that matter more.

Granted, some suppliers freeze when you ask. Most haven't prepared for it. But unprepared reactions tell you as much as polished ones do.

(Also: if a supplier claims to be excellent at casting, forging, machining, actuators, and instrumentation, they're probably excellent at none of them.)

Watch-Outs and Common Mistakes

  • Don't compare unit prices without the spec attached. A price is only meaningful against a written scope of work.
  • Don't ask “what are you good at.” That's a brochure question. Ask capability questions specific enough that a vague answer becomes obvious.
  • Don't confuse quote and delivery. A quote that says “4 weeks” usually means four weeks from release, not from PO. Pin down the starting point.
  • Don't trust certificates you haven't validated. A certificate on a factory wall is one thing. A certificate number that maps to your actual production lot is another. Require the mapping.
  • Don't jump to commercial terms before the technicals are settled. Clarify scope first, negotiate price second. If you buy on price alone, you'll get a quote that quietly removes steps — and you'll pay for those steps later in every other way.

Four of these seven steps cost less than an hour. The other three mostly cost patience, and they happen before the goods ship, which is the only place they can still help you. To me, that's the real math: a late shipment, a mismatched MTR, or a damaged flange face all get paid for in downtime, not in unit price.