When you're choosing between industrial valves, the decision is rarely just about the part number. Sometimes it's the material, sometimes it's the size, and sometimes it's how much definition you get for the money. The FNW Fig 321A and the INDUSTRIAL SPARE valve sit at opposite ends of that trade-off. This head-to-head breaks down the specs that actually matter so you can choose with confidence, whether you're doing a scheduled replacement, a new build, or a maintenance stock-up.
Quick verdict
The FNW is the stronger candidate when you want a manual ball valve with a clear pressure marking and the lower price in this comparison. The INDUSTRIAL SPARE is the direction to go when the material spec is the reason you're shopping. The price gap is the biggest single difference, but the decision starts with what your line needs, not with the price tag alone.
| Compared feature | FNW Fig 321A | INDUSTRIAL SPARE DN 13 316L |
|---|---|---|
| Price | $39.00 | $129.00 |
| Price bar | ||
| Material phrase | Carbon Steel | 316L |
| Size phrase | 3/4" | DN 13 |
Where each product wins
- Start with the FNW if the priority is a lower price and a manual valve format with the pressure marking already spelled out. It's the easier match when you're replacing a conventional ball valve, and the included lever handle means you don't have to source a separate operator.
- Go with the INDUSTRIAL SPARE if the material code is the reason you're shopping. It gives you a different material path and a different nominal size, at the higher end of the price range.
FNW Fig 321A 3/4" Carbon Steel Ball Valve 150 WSP 3-Piece Industrial Valve
This is the valve to pick when your line is built around a 3/4-inch carbon steel ball valve. The 150 WSP marking is printed on the handle, the body is a three-piece design, and the FPT ends give you a threaded installation path. At $39, it's the lower price in this comparison, so it leaves more of your budget for fittings. The catch is that the valve ships as the single unit shown: no additional fittings or accessories are included, so you'll need to supply those yourself. If your project needs a manual lever handle and a defined pressure mark, the FNW covers both.
INDUSTRIAL SPARE DN 13 316L VALVE NSNP
This valve earns its place when your project calls for a 316L material designation in a DN 13 body. The 316L material code is the main draw, and the $129 price is the higher of the two in this comparison, so the cost is a bigger factor to weigh before you commit. It ships as an open-box item under the INDUSTRIAL SPARE name. If you need a valve with a defined carbon steel ball-valve setup, the INDUSTRIAL SPARE is not that direction; it's a different size and material path. But for a DN 13 line where 316L is the material spec, this valve is the direct match at a much higher price than the FNW.
Final choice by use case
- Need a ball valve with a threaded connection and a pressure marking? Go with the FNW Fig 321A.
- Need a material-specific valve in a different nominal size and you can work with the higher price? Go with the INDUSTRIAL SPARE.
