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No 20 Boiler Compound
Balanced Sulfite Boiler Treatment for Hot Water Boilers and Closed Systems
CI WT No. 20 is the broad-coverage boiler compound for hot water and chilled water systems built with mixed metals — steel, copper, and brass running in the same loop. Its multi-component chemistry handles several failure modes simultaneously: nitrite forms a protective oxide film against general corrosion, sodium sulfite scavenges dissolved oxygen before it can pit tube walls, phosphates and organophosphonates control scale deposition from hardness minerals, and alkaline agents keep system pH in the protective range for ferrous and non-ferrous metals together. Where CI Alum Boiler Treatment exists for the narrow case of aluminum systems that need a controlled pH 8 environment, No. 20 is the workhorse for conventional steel-copper-brass systems that need corrosion protection, scale control, and oxygen management in a single treatment rather than layering three separate products. Well-suited for food processing facilities, institutional heating plants, and industrial process loops where system integrity directly affects production uptime. Compatible with standard boiler water testing routines — operators can monitor pH, phosphate, phosphonate, and sulfite levels against established control ranges and adjust dosing with confidence. Covers more metals, addresses more failure modes, and consolidates the treatment program into one compound for systems where the metallurgy is conventional and the consequences of neglect are not.
$277.00 / 20 L pail
Technical Data
Technical Data
Technical Properties
CI WT No. 20 Boiler Compound
Balanced sulfite boiler treatment formulated for hot water boilers and closed-loop heating or chilled-water systems built with conventional mixed metallurgy. Designed for steel, copper, and brass systems that need corrosion protection, oxygen control, and scale prevention in one treatment rather than a patchwork of separate chemicals.
Product Type
Balanced Boiler Water Treatment Compound
Technology Base
Nitrite, Sulfite, Phosphate, and Organophosphonate Water Conditioning Chemistry
Primary Function
Control Corrosion, Oxygen Attack, and Scale in Mixed-Metal Closed Systems
Application Role
General Treatment for Hot Water Boilers, Closed Heating Loops, and Chilled Water Systems
Performance Focus
Multi-Metal Protection, Oxygen Scavenging, and Hardness Deposit Control
Operational Mechanism
Nitrite Passivates Metal Surfaces, Sulfite Removes Dissolved Oxygen, and Phosphate-Based Components Help Suppress Scale Formation
Process Target
Steel, Copper, and Brass Components in Conventional Closed Boiler and Hydronic Systems
Operational Benefit
Consolidates Corrosion Protection, Oxygen Management, and Scale Control Into One Workhorse Treatment
Use Environment
Food Processing Facilities, Institutional Heating Plants, Commercial Buildings, and Industrial Process Loops
Program Fit
Broad-Coverage Treatment for Conventional Steel-Copper-Brass Systems
Maintenance Value
Helps Prevent Tube Pitting, Deposit Buildup, Reduced Heat Transfer, and Corrosion-Driven Service Calls
Monitoring Compatibility
Compatible with Standard Testing of pH, Phosphate, Phosphonate, and Sulfite Levels
Operational Notes
• This is the conventional mixed-metal workhorse in the line — built for steel, copper, and brass systems rather than aluminum-specific equipment
• Best used where the operator wants one treatment to handle corrosion control, oxygen scavenging, and scale prevention together
• Nitrite helps form a protective oxide film, while sulfite addresses the oxygen that quietly pits internals from the inside out
• Phosphate and organophosphonate components make this a broader system conditioner than a simple oxygen scavenger alone
• Distinct from CI Alum Boiler Treatment: No. 20 is for conventional steel-copper-brass metallurgy, not aluminum systems that require controlled pH around 8
• Strong fit for facilities where loop integrity directly affects production uptime, heating reliability, or process continuity
Practical Fit
CI WT No. 20 is the broad-coverage boiler compound for conventional hot water and chilled water loops where several failure modes can be developing at once. It belongs in systems built from ordinary boiler metals that need one stable treatment program to control oxygen attack, internal corrosion, and hardness deposits before they turn into leaks, fouling, and lost operating efficiency.
This block follows the operator-facing split established for the line: CI Alum Boiler Treatment is the material-specific option for aluminum systems, while CI WT No. 20 is positioned as the broad-coverage treatment for conventional steel-copper-brass hot water and closed-loop systems. The description you provided adds the useful commercial differentiation that No. 20 combines nitrite film protection, sulfite oxygen scavenging, and phosphate / organophosphonate scale control into one workhorse compound for mixed-metal loops.
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