Groco Sea Strainers

Since 1918, Groco has earned its reputation as a manufacturer of premium marine hardware, and nowhere is that expertise more evident than in their comprehensive line of sea strainers. With decades of engineering focused on protecting marine engines, generators, and air conditioning systems from raw water debris, Groco has developed strainer solutions that combine durability, serviceability, and innovative design features that set them apart in the marine industry.

The ARG Series: Engineering Excellence in Every Detail

The ARG Series raw water strainers are ideal filtration solutions for cooling water intakes for marine engines, AC units, and gensets, with superior design that makes them long lasting and easy to service. These strainers feature a durable one-piece molded sight glass to eliminate tie rods and gaskets, and construction with bronze head castings plus a choice of filter basket materials including #304 Stainless Steel, Monel, or Non Metallic. Available in sizes from 1/2" through 3" NPT pipe, with options including BSPP threaded ports and #316 Stainless Steel castings, the ARG Series accommodates virtually any marine application.

The thoughtful engineering extends to practical service features that boat owners appreciate. The mounting system allows basket removal without tools, while O-ring seals on all joining surfaces ensure leak-free operation. The non-metallic cap magnifies internal viewing, making it easy to monitor strainer condition at a glance. Bonding connections on both sides address electrical grounding requirements, and the improved drain plug simplifies maintenance procedures.

Hydromatic Technology: Self-Cleaning Innovation

As raw water strainers perform their job, filter baskets become clogged with debris and flow is reduced, but Hydromatic strainers eliminate untimely shut-downs by conducting a periodic self-cleaning cycle with a powerful internal macerator. This innovation represents a significant advancement for vessels operating in debris-heavy waters or for applications where continuous operation is critical. The user-selectable cleaning interval allows customization based on water conditions and specific operational requirements.

Construction Quality That Withstands Marine Environments

Constructed from solid bronze rather than DZR (dezincification-resistant) brass, Groco raw water strainers offer superior durability and corrosion resistance for marine environments. The C84400 bronze head castings provide the strength and longevity required for below-waterline applications, while the variety of basket material options allows selection based on specific water chemistry and debris types. Stainless steel baskets excel in general applications, Monel baskets resist galvanic corrosion in mixed-metal systems, and non-metallic baskets suit installations where electrical isolation is desired.

Comprehensive Product Range

Beyond the flagship ARG Series, Groco manufactures specialized strainer configurations including hull strainers, bilge strainers, and the SSA Raw Water Monitoring System that provides visual and audible alerts when flow reduction occurs. The extensive line of replacement baskets, gaskets, and service kits ensures that maintenance remains straightforward throughout the product lifecycle. Whether protecting a compact auxiliary genset or a large main propulsion engine, Groco's sea strainer lineup delivers the filtration capacity and build quality that marine professionals demand.