When you need to specify industrial pumps flow control, the core decision often comes down to buying a new-condition chemical process pump versus a larger used process pump with specialized materials. Both options can be valid, but the choice affects your initial cost and the range of duties the pump can handle. Here's a direct comparison of two distinct candidates: the Durco Flowserve MK3 STD Chemical Process DCI Centrifugal Pump and the Goulds 3196 XLT-X Centrifugal Process Pump.
Quick verdict: The Flowserve MK3 is the pick when you want a new-condition chemical pump with a compact 3x2 size. The Goulds 3196 is the pick when you need an 8x10-15G process pump and are comfortable with a used unit. The table below shows where each stands on price and material.
| Product | Listed Price | Price Indicator | Model | Material |
|---|---|---|---|---|
| Flowserve MK3 | USD 2,750 | MK3 STD | DCI | |
| Goulds 3196 | USD 6,500 | 3196 XLT-X | 316SS |
Where each product wins: The Flowserve MK3 carries a nameplate rating of 250 PSI at 100°F, which makes it a straightforward match for chemical process service within that pressure. The Goulds 3196 brings a listed capacity of 2940 GPM at 1800 RPM with 144 ft head, so it's the stronger candidate for higher-flow process applications. Also, the Goulds is listed as Type Water, aligning it with water service.
3" x 2" Durco Flowserve MK3 STD Chemical Process DCI Centrifugal Pump NEW Z1
The Flowserve MK3 is listed as new open box, so you are looking at a pump that hasn't been used in a prior installation. Its 3x2 size targets smaller process lines, and the DCI material and 250 PSI @ 100°F rating give it a clear chemical-process profile. The main limitation is the surplus designation: this is a new-condition unit from surplus inventory, so the sale relies on the seller's stated condition. If your pressure and flow needs align with the MK3 STD naming, this is a direct way to add a chemical process pump to your industrial flow control setup.
Goulds 3196 XLT-X Centrifugal Process Pump 8x10-15G 316SS
The Goulds 3196 XLT-X is a used process pump with an 8x10-15G casing, putting it in a larger size class than the Flowserve. The 316SS material and the listed Type Water classification point toward process and water service. The nameplate shows 2940 GPM capacity at 1800 RPM with 144 ft head, giving it a higher flow rating. The trade-off is the used scope: the listing describes the unit as pump casing/end only as pictured and removed from service, so you're getting a used component. For applications that need a larger stainless process pump, this remains a viable option.
Final choice by use case: If your flow control application calls for a chemical process pump, the Durco Flowserve MK3 is the match. If it calls for a process pump bearing the Goulds 3196 XLT-X designation, the Goulds is the one to choose.
