What device is used to remove large particulate matter from oil before it enters the OWS?

The device used to remove large particulate matter from oil before it enters the Oil-Water Separator (OWS) is a duplex strainer. A duplex strainer functions by using two filter chambers, allowing one chamber to be in use while the other can be cleaned or replaced without interrupting the flow. This continuous operation is critical in ensuring that larger particles, such as dirt and debris, are filtered out of the oil, preventing damage to the OWS and enhancing its efficiency.

The design of duplex strainers specifically focuses on handling larger particulates, which is crucial in maintaining the quality of the oil as it flows into the treatment system. By removing these particles early on, the duplex strainer helps to ensure that the OWS can function effectively, focusing on separating oil from water rather than being burdened by unwanted solids.

Other devices mentioned, like a filtration system or a particle filter, might be used for fine filtration but are not specifically designed to handle the larger particulates as effectively as a duplex strainer. An oil separator is more focused on the separation process rather than the pre-filtration of large solid particles. Thus, the use of a duplex strainer is essential in this context to maintain proper operation and longevity of downstream equipment like the OWS