The GROCO ARG-2500-P Raw Water Strainer is a professional-grade 2-1/2" NPT filtration system designed for high-demand marine applications. The "-P" suffix indicates that this model is equipped with a non-metallic (polyethylene) filter basket, which provides a distinct advantage in systems with continuous water flow.

Advantage of the Non-Metallic Basket

While bronze and stainless steel baskets are durable, constant exposure to high-velocity seawater can eventually lead to erosion or electrolysis in metallic mesh.

• Corrosion Proof: The plastic basket is entirely immune to electrolysis and pitting, making it the ideal choice for continuous-running systems like air conditioning, refrigeration, or large generators.

• Interchangeable: If your needs change, the non-metallic basket is fully interchangeable with GROCO's stainless steel or Monel metallic baskets.

• High Flow Efficiency: Maintains an 11:1 open-area ratio, ensuring your engine or generator receives maximum water volume without restriction.

Key Features and Construction

The ARG series is famous for its tie-rod-free design, which removes the most common failure points found in traditional strainers.

• C84400 Bronze Head: Provides a rugged, commercial-grade foundation for the unit.

• Magnifying Cap: The non-metallic screw-on cap features a clear design that magnifies the internal view, allowing you to inspect the basket for debris without opening the unit.

• One-Piece Sight Glass: A single molded acrylic cylinder eliminates the need for separate gaskets and structural tie rods, creating a cleaner, more reliable seal.

• No-Tools Maintenance: The quick-release mounting system and threaded cap allow for servicing without tools, a major benefit in cramped engine rooms.

Technical Specifications

• Pipe Size: 2-1/2" NPT (Threaded)

• Height: 17.0 inches

• Weight: ~32.4 lbs

• Basket Material: Polyethylene (Non-metallic)

• Certifications: UL Listed 255-D (Marine)

Final Summary

The ARG-2500-P is the best option for owners who prioritize long-term maintenance cycles in high-usage scenarios. It offers the same heavy-duty bronze housing as the standard ARG-2500 but trades the metal basket for a polyethylene version that will never corrode or bind.