PPG NovaGuard 890 is a two-component, solvent-free, amine-cured novolac phenolic epoxy coating. This 1-coat tank coating system is suitable for use in storage of unleaded gasolines, biodiesels and crude oil with reduced explosion risks and fire hazards.

NovaGuard 890 has good chemical resistance against a wide range of solvents and chemicals and meets the requirements of EI 1541 2.2 (coating systems for aviation fuel storage tanks and pipes). The coating can be applied by heavy-duty, single-feed, airless spray equipment (60:1), leaving a semi gloss and smooth finish that is easy to clean.

Please note: This product is subject to a minimum order quantity of 440L and has an approximate delivery lead time of 21-28 days

Features & Benefits

• Excellent resistance to crude oil up to 120°C (250°F)
• Suitable for storage of unleaded gasolines blended up to 100% ethanol (E5 up to E100)
• Suitable for storage of biodiesel (EN14214)
• Good visibility due to light color
• Reduced explosion risk and fire hazard
• Refer to tables below for information regarding spreading rate and film thickness, overcoating intervals and curing times

Product Data

Basic data at 20°C (68°F)

Notes:

• Refer to tables below for information regarding spreading rate and film thickness, overcoating intervals and curing times

Preparation & Application

Recommended Substrate Conditions & Temperatures

Substrate conditions

• Steel; blast cleaned to a minimum of SSPC-SP10 or ISO-SA2½ , blasting profile 50 – 125 µm (5.0 mils) (2.0 – 5.0 mils)
• Steel with suitable primer (NOVAGUARD 260 or PHENGUARD 930) must be dry and free from any contamination

Substrate temperature

• Substrate temperature during application and curing should be above 10°C (50°F)
• Substrate temperature during application and curing should be at least 3°C (5°F) above dew point

Instructions For Use

Mixing ratio by volume: base to hardener 80:20 (4:1)

• The temperature of the mixed base and hardener should preferably be at least 20°C (68°F)
• At lower temperature, the viscosity will be too high for spray application
• No thinner should be added

Application

Airless spray

• Use heavy-duty, single-feed, airless spray equipment, preferably 60:1 pump ratio and suitable high-pressure hoses
• No thinner should be added

Nozzle orifice

• Approx. 0.53 mm (0.021 in)

Nozzle pressure

• At 20°C (68°F) paint temperature min. 28.0 MPa (approx. 280 bar; 4061 p.s.i.)
• At 30°C (86°F) min. 22.0 MPa (approx. 220 bar; 3191 p.s.i.)

Brush

• Brush: for stripe coating and spot repair only
• No thinner should be added

Cleaning solvent

• THINNER 90-53 or THINNER 90-83

Notes:

• Paint inside the spraying equipment must be removed before the pot life has been expired
• All application equipment must be cleaned immediately after use

Additional Data

Note: Maximum DFT when brushing: 150 µm (6.0 mils)

Measuring Wet Film Thickness

• A difference is often obtained between the measured apparent WFT and the real applied WFT. This is due to the thixotropy and the surface tension of the paint, which retards the release of air, trapped in the paint film for some time
• Recommendation is to apply a WFT, which is equal to the specified DFT plus 60 µm (2.4 mils)

Measuring Dry Film Thickness

• Because of low initial hardness the DFT cannot be measured within some days, due to the penetration of the measuring device into the soft paint film
• The DFT should be measured using a calibration foil of known thickness placed in between the coating and the measuring device

Notes:

• Surface should be dry and free from any contamination

Notes:

• Gasoline or gasoline/alcohol blends are not included in purely aliphatic petroleum products, please contact our technical team on 0113 2455450 for further details
• Adequate ventilation must be maintained during application and curing (please refer to INFORMATION SHEETS 1433 and 1434)

Note: Due to exothermic reaction, temperature during and after mixing may increase