Poly-Guard® Liquid, Scale & Rust Preventer

GL41N

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A Cost-Effective Alternative for Soft Water Poly-Guard Liquid gives you a flexible, cost-effective way to control hardness, iron, and corr… Read More

A Cost-Effective Alternative for Soft Water

Poly-Guard Liquid gives you a flexible, cost-effective way to control hardness, iron, and corrosion—without installing a full water softener system. It’s an ideal solution for protecting equipment and plumbing in applications where space, budget, or system design limit traditional softening options.

Protect Equipment and Reduce Callbacks

From water heaters to ice machines, Poly-Guard helps extend equipment life and maintain performance—reducing scale buildup, service issues, and costly repairs for your customers.

WHY CONTRACTORS RELY ON POLY-GUARD LIQUID

ECONOMICAL HARDNESS CONTROL -Treats hard water and iron without the need for a full softener system—ideal for targeted applications

PREVENTS SCALE + CORROSION - Forms a protective coating on plumbing and heating surfaces to reduce buildup and system wear

PROTECTS CRITICAL EQUIPMENT - Helps keep water heaters, ice machines, dishwashers, and beverage equipment running efficiently

CONSISTENT POLYPHOSPHATE DELIVERY -Controlled release helps prevent hard water scale and iron buildup over time

FLEXIBLE INSTALLATION OPTIONS -Compatible with chemical feed pumps or refillable cartridge systems for #10 filter housings

HIGH CAPACITY PERFORMANCE- Refillable cartridge treats up to 30,000 gallons—ideal for ongoing protection with predictable service intervals

TRUSTED + CERTIFIED -NSF/ANSI/CAN 60 certified for safe use in potable water systems

Build A More Versatile Water Treatment Offering

Poly-Guard Liquid allows you to tailor solutions to the job—whether you’re protecting a single appliance or an entire system—while keeping installs simple and cost-effective.

Use Poly-Guard Liquid to deliver dependable scale and corrosion control—without the need for a full softening system.