Abstract: A casing surrounds a horizontal axis to define a cavity. The cavity has a top, a bottom, and axially front and rear ends. The casing is configured to conduct a mixture of a liquid and debris through the cavity from the front end to the rear end. Front and rear walls cap the casing at the front and rear ends. A horizontal outlet tube extends through the rear wall and defines a horizontal outlet channel with a bottom. A transversely-extending weir extends upward from the bottom of the cavity. The weir has a horizontal top edge located above the channel bottom and spaced below the top of the cavity, and further has fluid flow apertures below the channel bottom.

Abstract: A casing defines a cavity having a top, a bottom, and axially front and rear ends. The casing is configured to conduct a mixture of a liquid and a contaminant through the cavity from the front end to the rear end. A coalescer, located in the cavity, includes an inclined stack of corrugated plates extending rearward and upward. Each plate has corrugations extending rearward and upward.

Abstract: A casing surrounds an axis to define a cavity that has axially front and rear ends. The casing is configured to conduct a mixture of a liquid and a contaminant through the cavity from the front end to the rear end. A porous basket structure, located within the cavity, for holding coalescing media has a top opening. The basket structure is configured for the liquid to flow through the top opening into the basket structure, through the coalescing media, and outward through of the basket structure in a vertical direction and a horizontal direction. A constraining structure, located in the cavity, constrains the liquid flowing through the cavity from the front end to the rear end to flow through the top opening into the basket structure when the liquid is below a predetermined level.