GROCO ARG-2000 Series 2" Raw Water Strainer w/Monel Basket

The GROCO ARG-2000 Series 2" Raw Water Strainer with Monel Basket is a marine-duty intake protection system designed for serious cruising vessels and commercial boat operations where saltwater corrosion and debris management directly impact engine reliability. This strainer provides a critical first-stage defense against impellers, seals, and cooling passages clogging from suspended material—a leading cause of mid-passage cooling system failures on working boats.

The ARG-2000 features a removable basket design that requires no tools for service—a practical advantage when working offshore or during extended anchoring when sediment and biological growth demand rapid cleanout. The Monel basket material (a nickel-copper alloy) resists corrosion far more effectively than standard 304 stainless steel in saltwater environments, extending service intervals and reducing maintenance frequency. The one-piece molded sight glass eliminates traditional tie rods and gaskets, creating a more streamlined, lower-maintenance assembly. O-ring seals on all joining surfaces prevent weeping leaks, while bonding connections on both inlet and outlet sides ensure proper grounding in systems where electrical continuity matters for cathodic protection or equipotential bonding schemes.

This strainer is purpose-built for offshore cruisers, fishing vessels, and trawlers operating in coastal and open-ocean conditions where raw water intake can introduce fine sand, shell fragments, and algal matter. The 2-inch nominal connection accommodates mid-range displacement engines typical of 35–55 foot cruising boats. An improved drain plug facilitates seasonal winterization or emergency system evacuation. The modular basket approach allows operators to upgrade to non-metallic or alternative screens without replacing the entire housing, supporting operational flexibility across varying water conditions.