Choosing between two industrial valves starts with the job, not the price. You need to know the line size, the material that will touch your media, and the pressure your system sees. The two valves here point in different directions: one is a PVC socket ball valve with a published pressure rating, and the other is a 316L spare part labeled DN 13. The right pick depends on which side of that divide your piping falls on.
Quick verdict
If you are working with a water line, the Spears industrial ball valve is the easier choice to commit to: it names the socket size, pressure rating, and suitable media. The 316L spare is the one to buy when your maintenance job calls for a stainless spare with the DN 13 code.
Side-by-side look
| Attribute | INDUSTRIAL SPARE DN 13 316L VALVE NSNP | Spears Industrial Ball Valve Socket 3" PVC 1822-030 EPDM O-Ring 235 psi |
|---|---|---|
| Listed price | USD 129.00 | USD 99.95 |
| Material named in title | 316L | PVC |
| Size information | DN 13 | 3 in socket |
| Condition | New - Open box | New - Open box |
Where the Spears valve wins
The Spears product gives you a concrete match to a specific plumbing scenario. The title spells out the socket connection and 235 psi rating, and the listing adds water as a suitable media. That means you can compare the valve to your existing pipe and pressure requirements before buying. The description also says the purchase includes the item as shown in the photos, with no other parts or accessories, so you know exactly what you are getting.
Where the 316L spare wins
The INDUSTRIAL SPARE DN 13 316L VALVE NSNP wins when the system already tells you what replacement part it needs. The title identifies the material as 316L and gives the DN 13 size code, so this is a part-code-driven purchase. The description adds a 30-day return with a replacement or money-back option, which is useful when you are ordering a spare for an existing assembly.
Product notes
INDUSTRIAL SPARE DN 13 316L VALVE NSNP

If your system already uses a 316L stainless spare with a DN 13 size code, this is the product that lines up with that part. The title puts the material and code front and center, and the listing describes it as a spare valve, so it is aimed at a replacement job rather than a first-time installation. The ordering side is direct too: the description mentions a 30-day return with a replacement or money-back option, which takes some risk out of a part-code purchase. The limitation is that the listed details stay at the material and code level, so the fit depends on your existing part matching that DN 13 designation.
Spears Industrial Ball Valve Socket 3" PVC 1822-030 EPDM O-Ring 235 psi

The Spears valve is the option with a clearly documented set of specifications. The title names the PVC housing, EPDM O-ring, socket connection, and 235 psi rating, while the listing adds water as a suitable media. That makes it a stronger match for a water line where the socket connection and pressure rating line up. The description notes that the purchase includes the item as seen in the photos and no other parts or accessories, so it is a valve-only transaction. The trade-off is the limited scope of the order, but if the valve itself matches the system, that scope is not a problem.
Final choice by use case
- Choose the Spears valve when the assembly is a water line and the socket connection, rating, and listed media all line up with the system.
- Choose the 316L spare when the replacement calls for a stainless part with the DN 13 code.
- Use the size and material clues in the table to check whether either valve belongs in your piping setup.