Above Ground Oil Water Separators

October 7, 2023by Admin

Above Ground Oil Water Separators

We offer a complete line of high efficiency, stainless steel, above ground oil water separators that will remove 99.9% of free and dispersed non-emulsified oil and settleable solids from the waste stream.

Our staff of experienced engineers will provide you with an innovative, efficient, and cost effective solution to your oily waste water issues – just give us a call at 800-453-8639.

Innovative Oil & Water Separation

Oil water separators use parallel corrugated plates to cause the oil droplets in the water to increase in size, thereby speeding the gravity separation process. We enhance this process with our innovated UNIPACK cross-fluted media design with an internal structure of interconnecting channels with multiple crossing points between adjacent plates.

Oil Water Separator
Featuring an image of one of our oil water separator designs.

Coalescing of the oil droplets takes place in three steps:

  • Corrugated plates intercept oil droplets as the oil/water mixture flows through the separator.
  • New droplets coalesce with retained droplets, to make larger droplets.
  • Enlarged oil droplets separate from the water and rise to the surface

Customer Reviews:

“Because of your separators and service, I was able to help one of my customers in a pinch and I have been able to grow my business from 3 employees to 26!”
Gabe, Portland, OR
“We have 3 SPT clarifier separators and they are all working great! I will definitely buy another one when we need one!
Jason B.
“Our SPT separator is working perfectly! Last year, we tested the water downstream and the FOG was only 4 mg/l!
Rudy U.

Oil Water Separator Flow Process

Features of Our Oil Water Separators

  • Heavy-duty stainless steel construction
  • Conforms to the guidelines of API 421
  • Unique UNIPACK cross fluted media design – reduces size of separator
  • 99% oil and solids removal
  • Range of options and sizes available to fit your application

Benefits of Our Oil and Water Separators

  • Low maintenance and operational costs
  • Easy cleaning through removable vapor tight covers
  • No moving parts or power consumption
  • No chemicals, absorbent or filter cartridges to remove, replace or dispose of
  • Compact size

Water & Oil Separator Technology

Above Ground Oil Water Separator
Above Ground Oil Water Separator

The most common approach to the design of oil water separators is to configure parallel corrugated plates that cause the oil droplets to increase in size, thereby speeding the gravity separation process. We use a unique Unipack cross fluted design with an internal structure of interconnecting channels having many crossing points between adjacent plates. This produces enhanced efficiencies in significantly smaller units. Our Unipack construction requires a unit with only 5000 gallons capacity to produce the same yield of a traditional separator unit with 15,000 gallon capacity at a flow rate of 500 gallons per minute.

Above Ground Oil Water Separator Models & Flow Rate Table

Model # Average Flowrate (GPM) Approximate Dimensions W x H x L (ft)
WB-GS-1 3 1 x 2 x 4
WB-GS-2 6 2 x 2 x 4
WB-GS-3 9 3 x 2 x 4
WB-GM-1 6 1 x 2 x 5
WB-GM-2 12 2 x 2 x 5
WB-GM-3 18 3 x 2 x 5
WB-GM-1-1H 12 1 x 3 x 5
WB-GM-2-1H 24 2 x 3 x 5
WB-GM-3-1H 36 3 x 3 x 5
WB-AG-2 60 2 x 3 x 7
WB-AG-3 90 3 x 3 x 7
WB-AG-4 120 4 x 3 x 7
WB-AG-4-1H 150 4.5 x 5.3 x 9
WB-AG-5-1H 200 4.5 x 5.3 x 10
WB-AG-6 500 6.5 x 5.3 x 12
WB-AG-7-HP 900 7.5 x 6.5 x 14
WB-AG-8 1250 7.5 x 7.5 x 16
WB-AG-10 3000 10 x 7.5 x 20
WB-AG-12 4500 12.5 x 9 x 26

Question & Answer on our Oil Water Separator Products

Review a variety of different question and answers below related to our oil water separation design and oil separator products.

Oil Water Separator Case Studies

We showcase some of our case studies to help you understand our products, commitment and valuable service. Please review our oil water separator case studies below.

Are you interested in a below ground oil and water separator? Please visit our below ground oil water separator units page for more information.


North Carolina


At WashBaySolutions.com, we have been specializing in high tech, custom-engineered solutions to complex washing and wastewater issues since 1991.
+ 1 800-453-8639




Follow Our Activity

Get the latest news, product updates and case studies all happening here: