Choosing between a complete process pump and a pump drive is a fork in the road for any industrial flow control project. One option is the Goulds 3196 STi, an end-suction centrifugal pump built for demanding industrial settings. The other is the Masterflex L/S pump drive, a drive focused on drive control rather than fluid handling. Which one makes sense for your setup? The answer depends on whether you are replacing a complete pump or adding a missing component.
Quick Verdict
If you need a full process pump, the Goulds 3196 STi at $1,625 is the unit to choose. It delivers the complete pump package, and its listed specifications give you a clear match for existing piping. If you already have pump heads and need a drive, the Masterflex L/S pump drive at $89.56 is the lower-cost way to get drive control. The price gap is substantial, so the real decision rests on whether you're buying a pump or a drive.
At a Glance
| Product | Listed Price | Condition | Key Specs |
|---|---|---|---|
| Goulds 3196 STi 1x1.5-8 ANSI End-Suction Centrifugal Process Pump 6.750 | $1,625.00 | Used | 6.750" impeller, 1 1/2" inlet, 1" outlet, 3,500 RPM, electric power source, ductile iron |
| Masterflex L/S Digital Process Pump Drive Cinch Connection USB Kit | $89.56 | New | Digital pump drive, USB connection kit, Custom bundle: No, Modified item: No |
Where Each Product Wins
The Goulds wins when your flow control system calls for a complete centrifugal pump that can be connected into the process. The Masterflex wins when you need only a drive and you already have the pump head and tubing to pair with it.
Product Notes
Goulds 3196 STi 1x1.5-8 ANSI End-Suction Centrifugal Process Pump
This is the complete-unit option for flow control work in chemical, pulp, and paper processing. It gives you a full ANSI pump rather than just a drive, which is a real advantage when you need to get a system running with one purchase. The naming includes the 1x1.5-8 size, so you can check the connection dimensions before committing. The used condition is the main limitation; you'll want to inspect the pump thoroughly for wear before installation. That's an expected part of buying pre-owned industrial equipment, and the model is a recognized ANSI size rather than a one-off. If you're prepared to evaluate used machinery, this Goulds is the straightforward way to add a complete process pump to your flow control lineup.
Masterflex L/S Digital Process Pump Drive Cinch Connection USB Kit
This new digital pump drive is the component-level choice for flow control setups that already have pump heads or tubing ready to go. The included USB connection kit gives you a modern path for monitoring or adjusting the drive from a computer, and the 'Cinch' designation points to the drive's connection style. Because it's new, you avoid the wear-and-tear questions that come with pre-owned equipment. The trade-off is that this is specifically a drive and connection kit, so it won't pump fluid on its own; you'll need a pump head and tubing to complete the system. If your existing assembly is missing only the drive, this is the cheaper, cleaner option.
Final Choice by Use Case
If you need a complete process pump and are comfortable buying used industrial equipment, the Goulds 3196 STi is the practical pick. If you need a new pump drive and already have the rest of the pump setup, the Masterflex L/S pump drive is the way to go.
