Black+Decker Tool Buying Checklist: Valve Grinder, Impact Wrench, and Job Boss Air Compressor

If you're ordering Black+Decker tools for a crew, a shop, or a distributor order, this checklist is for you. I'm a quality inspector at a hardware distributor. I review roughly 200 SKUs per year, and in 2025 I rejected around 7% of first deliveries because the specs didn't match what the customer ordered—wrong voltage platform, missing accessories, or torque numbers that didn't line up with the product literature.

This isn't a 'best tools' list. It's the seven checks I run before I put money behind an order. Some of these sound obvious. The one in Step 5 is the one that costs people the most.

1. Name the job, not the tool

Before you search for a black and decker valve grinder or any other tool name, write down the actual work. A valve grinder isn't one generic machine. Workhead travel, chuck capacity, and whether the wheel dresser is included determine whether it'll handle your valve sizes. I've seen shops buy a compact unit because the price looked right, then find the chuck wouldn't hold their larger valves.

From the outside, it looks like a valve grinder either works or it doesn't. The reality is that the spec sheet decides whether it will work for you. Check max chuck opening, stem capacity, and wheel size before you compare prices.

2. Check the battery platform before you buy the bare tool

This is one of the most common misses. If you already run Black+Decker 20V MAX tools, a bare black and decker impact wrench can be a relatively cheap addition. If you're starting from nothing, the bare-tool price is misleading.

People assume you judge the cost of a power tool by its bare-tool price. Actually, the real cost is the platform you're committing to. A deal on a bare impact wrench stops being a deal when you add two batteries, a charger, and a case—or when you discover you already have a different battery system in the van.

I've made this mistake. I once ordered a bare tool and then spent almost as much on the kit parts to make it usable. Now I calculate batteries into the line item before I add anything to the order.

3. Read the torque rating with suspicion

Not every impact wrench rating means the same thing. For the black and decker impact wrench, look for both tightening torque and breakaway torque. The bigger number is almost always breakaway torque, and it doesn't tell you how much tightening force you're going to get on a lug nut. I do my planning around the tightening number instead.

It's not necessarily false advertising. It's that a 600 ft-lb breakaway number and a 350 ft-lb tightening number can appear on the same tool, and the ad copy picks the one that looks better. If a listing shows only one torque figure, treat it as a warning.

4. Flex-head wrench sets get a pivot check, not just a spec check

If your order includes a flex head ratcheting wrench set metric, the catalog spec tells you less than the feel of the pivot. A flex head that's too loose flops around at the worst angle. One that's too stiff doesn't save you any time. Look for a detent that holds the head at the common angles, and ask whether the set meets ASME B107.100. If the supplier doesn't know, that's an answer itself.

For a metric set, also check the size range against your actual fleet. It sounds basic, but a set that skips the sizes you use most is a set you'll keep looking for in another drawer.

5. Treat 'new old stock' and gray-market units like used tools

This is the step most people skip. A 'new old stock' black and decker valve grinder or a surplus Job Boss air compressor might never have been sold, but it may have sat on a shelf for years. Rubber hardens, seals stick, and packing grease can turn into something that doesn't help a bearing. That doesn't mean don't buy it. It means budget for inspection and factor in the risk of rework.

The same logic applies to gray-market power tools. If the price is far below every authorized dealer, ask where the unit came from and whether anyone will honor the warranty. I once had a supplier describe a compressor as new when the tank had sat in a container for years. Nothing showed up on the tank inspection, but the pressure switch stuck within a week.

6. For a Job Boss air compressor, check CFM at the pressure you actually use

Peak CFM numbers are for marketing. If you're running impact wrenches, nailers, or die grinders, what matters is CFM or SCFM at 90 psi. A compressor can sound big in free air and still not keep up under load.

Also check the tank. ASME-certified tanks carry a stamp on the rating plate. For a used or surplus unit, read that plate before you talk price. The pump might be fine while the tank has rust or corrosion issues that would cost more than the machine is worth.

7. For a welding machine: know the duty cycle and input power first

If you search 'where can i buy a welding machine' and land on a page about Black+Decker tools, keep in mind that welders are a separate product category from most of the lineup. That's not a problem. The buying process is still the same: identify the job, verify the input power, check the duty cycle, and confirm consumables availability before you compare prices.

Buy from whoever can answer those questions before they take payment. A machine that's $150 cheaper online isn't cheaper if it's down for eight weeks and you lose a job because of it. That's total cost thinking, and it applies to every tool on your list.

Final notes: what usually goes wrong

The mistakes I see most come down to three patterns:

• Buying a bare power tool without checking which battery platform it belongs to.
• Comparing peak CFM instead of CFM at working pressure.
• Buying a specialty machine based on price and brand recognition without checking service support.

Those won't show up on the purchase order. They show up on the job site. This checklist isn't about finding a perfect brand—it's about making sure the tool you order matches the job you wrote down in Step 1. If a spec can't be verified, treat it as unknown. Unknown specs are risk, and risk has a cost.

There's something satisfying about a tool order that lands and goes straight to work without surprises. That's the goal.