Amalgam Engineering

Baner, Pune, Maharashtra

NALFLEET™ Rocor NB Liquid is a proprietary blend of active corrosion inhibitors, formulated to provide optimum protection for ferrous and non-ferrous metals in engine cooling water systems. The product is specially designed to prevent electrolytic corrosion, cavitation, and erosion, ensuring long-term system integrity.

Applications:

🔹 Diesel engine cooling systems

🔹 Compressor cooling systems

🔹 Centralized cooling systems

🔹 Hot water heating systems

🔹 Auxiliary machinery cooling systems

NALFLEET™ Rocor NB Liquid forms a stable oxide film on metal surfaces, offering excellent corrosion resistance without harming seals, gaskets, or hoses. It is compatible with glycols for freeze protection, making it ideal for vessels operating in cold environments.

Key Features

1] Prevents Electrolytic Corrosion – Forms a protective oxide layer on metal surfaces

2] Effective Against Cavitation and Erosion – Extends equipment lifespan

3] Compatible with Glycols – Provides freeze protection when required

4] Non-Damaging to Seals & Gaskets – Safe for most non-metallic components

5] Liquid Form for Easy Dosing – Ensures hassle-free application

6] Maintains Optimal pH Levels (8.0 - 11.0) – Prevents acid corrosion

Benefits

1] Manufacturer Approved – Used by major diesel engine manufacturers

2] Easy Testing & Maintenance – Simple control test kits available

3] Safe for Most Materials – Does not harm gaskets, hoses, or seals

4] Prevents System Downtime – Reduces corrosion-related failures

5] Compatible with Distilled Water – Helps maintain low chloride levels

How to Use

🔹Pre-clean the system using Unitor™ Seaclean Plus (for degreasing) and Unitor™ Descalex (for scale removal) if required.

🔹Dose ROCOR NB Liquid at a recommended concentration of 9–21 L/m³, depending on system requirements.

🔹Ensure proper circulation when adding the product to the expansion tank.

🔹Regularly test the nitrite levels using the Spectrapak Test Kit and adjust dosage to maintain levels between 1,000–2,400 ppm.

Use distilled water for make-up water to keep chloride levels below 50 ppm.

For freeze protection, mix with glycols as per system requirements.

NALFLEET™ Cooltreat AL™ is a premium, organic liquid corrosion inhibitor designed for closed engine cooling water systems. Unlike traditional inhibitors, it forms a thin, durable protective layer on metal surfaces, preventing corrosion while maintaining excellent heat transfer efficiency.

This innovative solution is based on aliphatic acid technology, making it non-depleting and requiring less frequent testing. Its environmentally friendly, biodegradable formulation ensures compliance with modern marine regulations.

Ideal for protecting materials such as aluminium, steel, and brass, NALFLEET™ Cooltreat AL™ is perfect for use in:
Diesel Engines
Compressors
Central Heating Systems
Auxiliary Machinery Cooling Systems

Key Features:

• Effective Corrosion Protection – Guards against cavitation, erosion, and scaling.
• Superior Heat Transfer – Prevents insulating layer build-up on heat transfer surfaces.
• Environmentally Friendly – Fully organic, biodegradable, and low toxicity.
• Stable and Long-Lasting – Non-depleting formula reduces the need for frequent testing.
• Aluminium Safe – Compatible with aluminium components.
• Compatible with Glycols – Ensures effective frost protection when mixed with glycol solutions.

Benefits:

• Reduced Maintenance – Extended system life with minimal upkeep.
• Improved Efficiency – Superior heat transfer improves performance.
• Versatile Use – Suitable for various marine and industrial applications.
• Environmentally Responsible – Eco-friendly formulation that meets modern marine standards.
• Tested and Approved – Approved by major engine manufacturers.

Specifications:
General:

IMO/EU Hazard Classification: C-7

Physical Properties:

Appearance: Colourless
Density [g/ml]: 1.06
pH: 9.4
Form: Liquid
Approvals & Certifications:
Approved by all major engine manufacturers
Environmentally Friendly and Biodegradable

Directions for Use:

1. System Preparation:

For new systems, clean the system with UNITOR™ Commissioning Cleaner before applying Cooltreat AL.For contaminated systems, degrease using UNITOR™ Seaclean Plus followed by descaling with UNITOR™ Descalex.

2. Dosing Method:

Add 60 litres of Cooltreat AL™ per 1,000 litres of untreated distilled water (6% concentration).
For systems with aluminium components, ensure Cooltreat AL is used rather than traditional inhibitors.

3. Maintenance and Testing:

Regularly test the system using the Spectrapak Test Kit to ensure optimal inhibitor levels.
Maintain pH levels between 7.0 and 9.0 and ensure chloride levels are below 50 ppm.

4. Make-Up Water:

Always dose 6% Cooltreat AL™ in any make-up water added to the system.
Use distilled water to minimize chloride levels and maximize corrosion protection.