GROCO ARG-1500 Series 1-1/2" Raw Water Strainer w/Non-Metallic Plastic Basket

The GROCO ARG-1500 Series 1-1/2" Raw Water Strainer with Non-Metallic Plastic Basket is a purpose-built intake protection system for marine engines and systems that demand reliable debris exclusion without corrosion risk. Designed for raw water applications on vessels ranging from recreational boats to commercial systems, this strainer intercepts sediment, marine growth, and particulates before they reach cooling systems, pumps, and heat exchangers—where blockages cause power loss, overheating, and costly repairs.

The ARG-1500-P features a one-piece molded sight glass that eliminates tie rods and traditional gasket complexity, making internal basket inspection straightforward without complete disassembly. O-ring seals across all joining surfaces ensure watertight performance in both fresh and saltwater environments. The non-metallic plastic basket option resists galvanic corrosion—a critical advantage in salt air where standard stainless steel baskets can still degrade over extended seasons. Tool-free removal mounting allows quick basket cleaning and replacement without breaking fasteners or requiring shipboard wrench work.

This strainer serves weekend fishermen protecting modest cruising engines as well as serious offshore anglers and charter operators running high-flow systems where engine intake reliability is non-negotiable. The 1-1/2" connection size fits common marine through-hull plumbing on mid-range and larger vessels. Bonding connections on both inlet and outlet sides maintain electrical safety in systems where grounding matters—particularly important for fiberglass hulls and systems with sacrificial anodes.

Raw water strainers are foundational preventive maintenance on any ocean-going vessel. The ARG-1500 Series places reliability and ease of service at the center of its design, addressing the real-world reality that strainer baskets need regular inspection and cleaning—especially in sandy anchorages or areas with high sediment load. Having a strainer that opens without tools and resists materials degradation reduces the friction around routine maintenance and extends the life of the engine systems downstream.