Liquid cleanup in a workshop or production floor can mean two very different jobs: removing suspended particles from a liquid stream, or removing floating oil from machine coolant. That's why filtration separation products can look so different on a spec sheet. On one side is a 50-bag lot of sewn filter socks from Duda Energy; on the other is a powered PreAsion oil water separator built for machine tools. The right choice depends on whether your problem is particle load or oil buildup.
Quick verdict
If you need fine particle filtration for liquids like biodiesel, WVO, fuel, water, or oil, the Sewn Industrial Filter Sock Bags are the more direct and lower-cost path. If your priority is keeping cutting fluid clean on a machine tool and recovering floating oil, the 208-240V Industrial Oil Water Separator is the more complete solution.
Side-by-side comparison
| Consideration | Sewn Industrial Filter Sock Bags | 208-240V Oil Water Separator |
|---|---|---|
| Listed price | USD 316.00 | USD 1,703.84 |
| Price position | ||
| What it is | Lot of 50 sewn filter sock bags | Powered oil water separator / skimmer |
| Liquid focus | Water, liquid biodiesel, WVO, oil, dust, fuel, diesel | Cutting fluid in machine tools |
| Power / sizing | Size #4, 4" x 14" bags | 208-240V, 3PH |
| Best for | Replacing filter media in batches | Continuous oil removal from coolant |
Where each product wins
The filter sock lot wins when you need fine filtration in volume. Each bag carries a micron rating of 1/2 - 0.5 micron, and the 50-bag count gives you enough media for repeated change-outs. The oil water separator wins when you want ongoing oil removal from cutting fluid rather than one-by-one bag replacement. It is a powered unit designed to prolong cutting fluid life and keep machine tools accurate.
Product notes
Sewn Industrial Filter Sock Bags
The Duda Energy sewn filter sock bag lot gives you 50 bags in Size #4 (4" x 14"). The micron rating is 1/2 - 0.5 micron, which points to fine filtration for liquids such as water, biodiesel, WVO, oil, dust, fuel, and diesel. You get a consumable filter medium rather than a machine, so this choice suits shops that want to swap media as part of their existing filtration separation routine. The trade-off is that these are bags, not an oil recovery system; they handle particle load well but do not actively skim or separate floating oil. For a facility that works through many filter changes, this lot is a straightforward media buy at USD 316.00.
208-240V Machine Tools Industrial Oil Water Separator
The PreAsion oil water separator is a powered unit for machine tool coolant. It runs on 208-240V three-phase power and is designed to separate floating oil from cutting fluid, which extends cutting fluid life and helps protect the working environment. The oil drainage feature recovers oil, and the cleaning valve clears sludge from the tank bottom. Choose this when you need continuous oil management rather than disposable filter media. The limitation is the opposite of the sock bags: it is a specific machine-tool solution, not a general liquid filter. It is a larger investment and it will not replace the need for particle filtration media if your coolant also carries solids.
Final choice by use case
Choose the Sewn Industrial Filter Sock Bags if your routine is particle filtration across water, biodiesel, WVO, oil, fuel, or diesel and you want a supply of filter media to keep on hand. Choose the 208-240V Industrial Oil Water Separator if you run machine tools and need to keep floating oil out of cutting fluid. The two products aren't competing for the same task; they are two different answers to the filtration separation question, and your specific liquid tells you which one to buy.
