Raritan In-Line Strainer

The Raritan In-Line Strainer (Part Number 163000) is a marine water intake filter designed to protect raw water cooling systems and reduce odors caused by seawater sediment and biological matter. This strainer intercepts debris—seaweed, sand, algae, and suspended solids—before they reach your engine's cooling system, pump, or marine toilet, preventing costly clogs and component failure downstream.

Seaweed accumulation is a leading cause of raw water pump failure and system shutdown on vessels, particularly in coastal waters and during heavy weed season. The in-line strainer design allows water to flow freely while trapping particulate matter in a collection chamber, eliminating the need for manual line clearing during critical moments. The compact 6 x 4 x 8-inch form factor permits installation in tight spaces along the raw water intake system without extensive plumbing modifications. Regular cleaning of the strainer basket maintains optimal flow and extends the service life of downstream equipment.

This strainer suits weekend anglers running center consoles and cruising sailboats, as well as serious offshore operators who rely on uninterrupted cooling performance in demanding marine environments. Vessel owners with raw water toilets, heat exchangers, or air conditioning systems benefit most from the odor reduction and debris filtration this unit provides. The Raritan brand is recognized for marine sanitation and water system components designed to handle saltwater exposure and the corrosive demands of extended sea duty.

In-line strainers are foundational to marine system maintenance, acting as a first line of defense for any vessel drawing raw seawater. Installing or replacing a strainer before a season begins—or after heavy weed conditions—prevents emergency repairs and keeps equipment running reliably when you're away from the dock.