Oil/ Water Separator with Automatic Shutoff Valve.

The ESK™ is a passive high efficiency coalescing separator that removes free oil from contaminated stormwater runoff.

The ESK has a built-in shutoff valve to prevent spills and storage capacity excess exiting the device. The device is ideally suited for sites where specific effluent targets are specified, or for sites where removal of oil and grease is the greatest concern e.g. fuel stations, fuel distribution stations, car servicing workshops, etc.

It is typically sized to remove oil droplets as small as 10 microns and achieve an effluent concentration of 5 mg/L or less.

Remove oil droplets as small as 10 microns
achieve an effluent concentration of 5 mg/L or less.
Shutoff valve to prevent any spill escaping ESK system
coalescing foam

How it works



Efficient Oil-Water Separation
  • Separates free oil from water using gravitational and coalescing technology.
  • Provides discharge of oil concentration as low as <5 PPM with an oil droplet size of approx. 10 μm.
  • Ensures clean water output, meeting stringent environmental standards.
Versatile and User-Friendly Design
  • Standard products accommodate a large variety of flows, ensuring scalability and flexibility.
  • Automatic shutoff valve enhances operational safety and reliability.
  • Easy installation and maintenance reduce downtime and operational costs.
  • Reusable and washable media contribute to long-term cost savings and sustainability.
Space-Saving and Regulatory Compliance
  • Smaller footprint and depth compared to traditional oil/water separators optimize space utilization.
  • Optional alarm system provides additional safety and monitoring capabilities.
  • CE Marking and compliance with European and British EN 858 standards ensure adherence to quality and regulatory requirements, enhancing trust and market acceptance.


  • Refuelling stations
  • Farms
  • Petrol Stations
  • Industrial Sites
  • High contaminating activities

Design your own

for site specific needs

Use our free online sizing tool for instant DIY sizing and technical specifications.