
Technical Literature
Specifications, sizing data and process details
- OSE Oil Water Separator Hopper Bottom
- OSE Oil Water Separation Specifications
- Oil and Fuel Removal
- How Oil Water Separators Work
- General Brochure
OSe - Stainless Steel Oil Water Separator
Efficient Oil-Water Separation for Industrial Wastewater
Achieve superior removal of free and dispersed oils, fuels, and solids with our high-performance Ose coalescing stainless steel oil water separator featuring Flopak coalescing media. Designed for reliability, low maintenance, and compliance with stringent environmental standards, our systems deliver effluent quality down to low PPM levels.
- 99.99% free-oil removal capability (meets EPA Method 1664 and EN 858-1)
- Flow rates from 5 to 250,000+ GPM
- Ideal for new installations or retrofits
Stainless Steel Oil Water Separator Overview
Our coalescing oil water separators utilize Flopak — a premium cross-corrugated, high-surface-area coalescing media — to efficiently separate non-emulsified oils, fuels, and solids from wastewater streams.
The media creates numerous droplet impact sites and changes in flow direction, promoting laminar and sinusoidal flow. Small oil droplets collide with the media surfaces, coalesce into larger droplets, and rise to the surface for easy skimming, while solids settle into collection hoppers below.
This enhanced gravity separation technology outperforms traditional API separators, allowing higher flow rates in a more compact footprint while handling challenging applications with solids loading.
Key Features & Benefits
Flopak Coalescing Media Advantages
- High surface area per cubic foot for maximum droplet capture and coalescence
- Cross-corrugated design with solids settling/clearing channels to minimize plugging
- Multiple materials of construction: PVC, HPVC, Polypropylene, 304/316 Stainless Steel, Glass-reinforced Polypropylene
- High-temperature capabilities
- Space-efficient — increases system throughput without expanding tank size
- Removable/replaceable modules for easy maintenance and retrofits
Oil Water Separator System Benefits
- Reliable performance down to 3-10 mg/L (or lower) oil in effluent, depending on influent characteristics
- Handles free & dispersed oils, fuels, and solids
- Low operating & maintenance costs — no consumable filters required
- Gravity or pumped operation
- Durable construction for above-ground or below-ground installation (including precast concrete vaults)
- Customizable designs for specific flow rates, droplet sizes, and site constraints
How It Works
- Influent Chamber — Wastewater enters and initial turbulence is reduced; heavy solids begin to settle.
- Flopak Media Chamber — Flow passes horizontally through the corrugated media pack. Oil droplets attach to the oleophilic surfaces, coalesce into larger droplets, and migrate upward along the corrugations.
- Separation & Collection — Coalesced oil rises to the surface for automatic or manual removal. Clean water exits from below the oil layer. Solids slide down the media into a hopper or collection area.
- Effluent Discharge — Polished water meets discharge requirements.
The sinusoidal flow path and high number of impact sites make Flopak exceptionally effective at capturing even smaller droplets.
Technical Specifications (Typical)
- Media Plate Spacing: Available in ½", ¾", 1.2" (customizable based on solids loading)
- Flow Rates: 5 – 250,000+ GPM
- Materials: Corrosion-resistant plastics or stainless steel
- Performance: Meets or exceeds EPA 1664 & EN 858-1 standards
- Options: Skimmers, level sensors, alarms, heaters, automated controls, retrofits for existing tanks
Exact specifications are tailored to your application. Contact us for sizing calculations.
Why Choose Our Flopak Enhanced Oil Water Separators?
- Proven technology from industry-leading coalescing media
- Expert design support for new builds or existing tank retrofits
- Long service life with stainless steel construction and minimal maintenance
- Cost-effective compliance with environmental regulations
To Improve Your Oil-Water Separation
Contact our experts today for a free consultation, system sizing, or retrofit evaluation. Call Us today at 262.716.0105.
Industrial Applications
Ideal For:
- Industrial wastewater treatment
- Stormwater runoff & parking lot drainage
- Refinery & petrochemical processes
- Machining coolants & metalworking fluids
- Vehicle/equipment wash racks (heavy equipment, tank trucks, locomotives, aircraft)
- Groundwater remediation (LNAPL/DNAPL)
- Bilge water treatment & ballast water treatment
- Steel mills, can manufacturing, stamping operations, and more
Need replacement media? We supply replacement coalescing media packs for Pan America separators and many other brands, plus concrete tank retrofits. Replacement & retrofit media · Media pack builder · Parts & media
Request a quote: Stainless Steel Oil Water Separator Tank
Tell us your flow rate and what is in the water. Our engineers size every system for your facility and reply with questions or a recommendation. Quote requests go straight to our sales team.
Need help choosing or sizing OSe?
Our engineers size and configure every system for your flow rate, wastewater and site. Contact us for a consultation, pilot testing or a custom quote.


