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CORROSION COATINGS

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Why Corrosion Coating Is Essential For Heat Pumps ??

Coastal environments are notorious for their high levels of airborne salt and humidity, which pose significant risks to the longevity and performance of heat pump systems. The two primary factors air salinity and humidity which creates continuous threat to unprotected condenser coils and metal enclosures.

Air Salinity
Coastal environments are notorious for their high levels of airborne salt and humidity, which pose significant risks to the longevity and performance of heat pump systems. The two primary factors air salinity and humidity which creates continuous threat to unprotected condenser coils and metal enclosures.
Humidity
High humidity levels further intensify corrosion by accelerating electrolytic reactions on metal surfaces. Even without direct seawater contact, salt can settle onto metal components through wind. This salt attracts water vapor, forming a corrosive electrolyte layer that leads to pitting, rusting, and ultimately, structural breakdown of condenser coils and other metal parts.
PROTECT YOUR INVESTMENT

To safeguard the condenser and evaporator coils of the AQUATECH and QUANTUM range of heat pumps, Weather Makers offers a comprehensive range of corrosion resistant coatings. Additionally, the enclosure of the heat pumps can also be protected with these specialized coatings.

1. VR-514
2. P-413
3. WB-506
1. PoluAl XT

Corrosion coating is a protective  layer applied to metal surfaces to prevent or minimize the effects of corrosion. In heat pumps, components like condenser and evaporator coils, as well as the enclosure, are exposed to harsh environments, including  saltwater, humidity, and chemicals. Corrosion  coatings act as a barrier safeguarding these components from degradation, ensuring long term performance and reliability.

Range Of Coatings

VR-514

VR-514 is a thin film, air dry phenolic with excellent resistance to corrosive fume atmospheres and is particularly good in marine and salt air environments to protect HVAC components, such as condenser and evaporator coils. VR-514 coatings are easy to apply and exhibit superior durability, excellent adhesion and good flexibility.

KEY FEATURES

  • Superior Corrosion Protection:Offers exceptional resistance to corrosion caused by salt-laden air,high humidity, and industrial pollutants.

  • Extended Equipment Lifespan:Enhances the durability of metal components, reducing the frequencyof maintenance and replacement.

  • Maintains Heat Transfer Efficiency: Ultra-thin application ensures minimal impact on heat transfer,maintaining optimal system performance.

TEST CONDITIONS

  • Salt spray: ASTM B-117:Passes 2,000 hours as primer-finish.

  • Bend test:ASTM-D522: Passes ½ inch mandre

  • Thermal conductivity:1% for finned tube coil applications

  • Food contact:Meets FDA 175.300 for indirect food contact

AVAILABLE RANGE:
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Heat pumps and chillers

APPLICATION METHOD:
  • Brush
  • Spray
  • Flood
  • Roller
COATING SURFACES:

Condenser & Evaporator Coils

COLOR:
Red
Brown
FINISHED APPEARANCE OF HERESITE VR-514 COATING
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P-413

Heresite P-413 is a high-performance, thin-film phenolic epoxy coating designed specifically for coil and radiator heat exchangers, as well as air and fume handling equipment made from light gauge metals. Renowned for its durability, P-413 is the first HVAC-R coating to meet the stringent ISO 12944-9 standard (formerly ISO 20340) for severe offshore marine environments, making it a top choice for challenging conditions.

KEY FEATURES

  • Exceptional Corrosion Resistance: Extends the service life of HVAC equipment, offering superior protection against salt air, marine environments, and aggressive chemical exposure.

  • ISO 12944-9 Certified: Meets rigorous standards for severe offshore marine environments, ensuring reliable performance in the harshest conditions.

  • Efficient Thermal Conductivity: Applied as an ultra-thin film, it minimizes thermal loss, with coil OEMs reporting less than 1% reduction in thermal efficiency.

  • Chemical and Fume Resistance: Withstands exposure to a broad range of high and low pH corrosive fumes and condensate, making it ideal for both industrial and coastal applications.

TEST CONDITIONS:

  • Cyclic weather:ISO 12944-9/ISO 20340: No external damage of coated layer (both with and without a UV topcoat) after 4,200 hours (25 cycles) alternating between salt spray, UV radiation, and temperature shocks

  • Static salt spray:ASTM B-117: 30,000+ hours

  • Bend test: ASTM-D522: >1/4 inch

  • Adhesion 5B – on copper, aluminium, steel, stainless, hot dipped galvanizedThermal efficiency impact: <1%

  • Food contact: Meets FDA 175.300 for indirect food contact, NSF Certified ANSI 51 Certification of Coatings for Food Zone – Non Contact

AVAILABLE RANGE:

APPLICATION METHOD:
  • Immersion
  • Flood
COATING SURFACES:
  • Condenser& Evaporator Coils
COLOR:
Brown
FINISHED APPEARANCE OF HERESITE P-413 COATING
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WB-506

Hereshield is a premium, water-based coating designed to provide exceptional protection against corrosio for HVAC components. Utilizing advanced polymer technology, Hereshield offers superior resistance to salt, moisture, and chemical exposure, making it an ideal solution for heat pumps operating in coastal and industrial environments.

KEY FEATURES

  • Water-based, thin-film, low-VOC, direct-to-metal coating.

  • Single-component, spray-applied coating for both internal andexternal surfaces of HVAC-R heat exchangers.

  • Specially designed for marine/saltwater environments and mild tomedium chemical exposures.

  • Provides excellent corrosion resistance, UV resistance, and weathering capabilities.

  • Strong adhesion to ferrous and non-ferrous metals without the need for complex pretreatment or primers.

  • Delivers superior durability and salt fog performance.

  • Compatible with a variety of heat exchanger types, including RTPF(Round Tube Plate Fin) and MCHX (Microchannel Heat Exchanger).

  • Developed as a high-performance alternative to VR-514 air-drysolvent-based phenolic coatings.

TEST CONDITIONS

  • Cyclic offshore testing: ISO 12944-9 /ISO 20340: 25 weeks (4,200hours)

  • Static salt spray: ASTM B-117: 15,000+ hours

  • Humidity: ASTM D2247: 4,000+ hours

  • Bend test: ASTM D522: 1/8 inch (3.0 mm) mandrel with no cracks or delamination

  • Crosshatch Adhesion: ASTM D-3359: 5B

  • Impact Resistance: DSTM D-2794-93: Direct– 50 inch-pounds (0.58  kilograms/meter), Indirect – 50 inch-pounds (0.58 kilograms/meter)

AVAILABLE RANGE:
Complete range of :

Heat pumps and chillers

APPLICATION METHOD:
  • Spray
COATING SURFACES:

Condenser& Evaporator Coils

COLOR:
Grey
FINISHED APPEARANCE OF HERESITE WB-506 COATING
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PoluAl XT

Blygold's PoluAl XT is a polyurethane coating enriched with aluminum pigments, designed to be applied to the heat exchanger coils in a very thin layer (20-30 um). This ultra-thin coating maintains excellent thermal conductivity while creating a robust shield against corrosion and environmental factors, making it suitable for various operational conditions.

KEY FEATURES

  • Superior Corrosion Protection: Corrosion Resistance: Exceeds 11,000 hours in salt spray tests(ASTM B117), ideal for coastal and marine environments. Thermal Conductivity: Ultra-thin coating with a thermal conductivity of 0.25 W/m·K, ensuring efficient heat transfer.

  • Superior Corrosion Protection: UV and Chemical Resistance: Provides robust protection against UV exposure and chemicals, perfect for outdoor and industrial applications.

  • Superior Corrosion Protection: Application Flexibility: Applied by certified Blygold applicators for even coverage on complex geometries.

  • Superior Corrosion Protection: Eco-Friendly: Reduces part replacements, lowering waste and environmental impact, with minimal maintenance required.

TEST CONDITIONS

  • Cyclic weather: Kesternich test: 80cycles with no damage.

  • Salt spray: ASTM B-117: 4,000+ hours(heat exchangers), 11,000 hours(aluminum plates).

  • ASTM B-287: 4,000+ hours.

  • Bend test: ASTM D-522: No cracking observed.

  • Adhesion: Cross hatch: 5B on aluminum and copper. Thermal impact: 0-5% on heat transfer efficiency.

  • UV resistance: High durability for outdoor use.

  • Chemical resistance: Excellent for harsh environments.

AVAILABLE RANGE:
Complete range of :

Heat pumps and chillers

APPLICATION METHOD:
  • Spray
COATING SURFACES:
Condenser & Evaporator Coils
COLOR:
Champagne
FINISHED APPEARANCE OF HERESITE PoluAl XT COATING
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