Raritan Raw Water Strainer [RWS]Raw Water Strainer The Raritan Raw Water Strainer is an inexpensive way to protect your engine, generators, AC units and other equipment that requires outside water from dangerous debris. Each Raritan unit is pressure tested at the factory prior to shipping. The strong clear plastic body makes it easy to monitor debris in the strainer. Features: Clear housing Easy to install and maintain # 16 mesh removable high capacity filter Includes mounting