PPG SIGMAGUARD CSF 575 Solvent-free Epoxy Coating CSF 575

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Key properties

• Coating for potable water storage compartments/tanks
• Can be applied with single-component airless spray equipment
• Reduces explosion risk and fire hazard
• Light colour makes it conspicuous in confined areas and provides good visibility.
• Used as a protective coating for potable water storage tanks/compartments; the product has obtained type approval from the Norwegian Institute of Public Health.
• Highly recognised corrosion protection coating (Lloyd's Register certified)

Colour and gloss

• Blue, cream, white, and red-brown
• Gloss

Basic data at 20 °C (68 °F)

Parameters after mixing

British standard UK PG 6/23(92) Appendix 3: maximum 44.0 g/L (approx. 0.4 lb/US gal)

Maximum: 20 days

Curing agent: at least 24 months; store in a dry and cool environment

Notes

• See the supplementary data sheet — theoretical spreading rate versus dry film thickness table
• See supplementary parameters — recoat interval table
• See supplementary parameters table — curing time table

Recommended substrate condition and temperature

Carbon Steel

• Bare steel: abrasive blast clean to Sa 2½ (ISO 8501-1), with surface roughness of 40–70 µm (1.6–2.8 mils).
• If a temporary protective primer is required, select SIGMAGUARD215, Epoxy Universal Primer 280 (DFT 50 µm), or Multi-purpose Epoxy Coating 200 (DFT 75 µm).

Concrete substrate

• Remove oil, grease and all other contaminants in accordance with ASTM D4258.
• Abrade in accordance with ASTM D4259 to remove glaze or laitance and achieve roughness ICRI CSP 3 to 5.
• For certain specific applications, AMERCOAT 114 A may be used as a repair putty to fill small pits. Consult the PPG field technical service representative,

for information on the chemical resistance of the coating.

• Moisture content shall not exceed 4% (in accordance with ASTM D4944, calcium carbide gas method).
• If the primer is required to withstand liquid static pressure, apply one coat of Solvent-free Quartz Epoxy Coating 1090 before applying Solvent-free Epoxy Coating CSF 575.

Substrate temperature and application conditions

• During application and curing, the substrate temperature must be above 10 °C (50 °F)
• During application, the substrate surface temperature must be maintained at least 3 °C (5 °F) above the dew point.

Instructions for use

Mixing ratio by volume: base : curing agent = 80 : 20

• The temperature of the mixed base and curing agent should be at least 20°C (68°F).
• Do not add thinner
• Recommended application guidance: refer to the application procedure for the specific product.

Pot life after mixing

1 h at 20 °C (68 °F). Note: see supplementary parameters — pot life after mixing

Airless spray (single-feed pump)

• Use a heavy-duty single-component spray pump with a 60:1 pressure ratio and suitable high-pressure hose/in-line heating or insulation, to prevent the paint in the hose from cooling and thickening during low-temperature application.
• For low-temperature application, use heated or insulated hoses to prevent the paint from thickening in the lines.
• With high-pressure hoses fitted with a line heating system, application is possible using a 45:1 single-component spray pump.
• Keep hoses as short as possible

Nozzle tip size

Approx. 0.53 mm (0.021 in)

Note: when applying with a 45:1 single-component spray pump, heat the paint in the hose to about 30 °C (86 °F) so that the viscosity is adjusted to a state suitable for application.

Brush/roller

• Brush: for small-area local touch-up and stripe coating only

Cleaning solvent

Thinner 90-53 or Thinner 90-83

Supplementary parameters

Film thickness and spreading rate

Note: maximum DFT for brush application: 100 µm (4.0 mil).

Wet film thickness measurement

• On site, differences often occur between measured WFT readings and the true film thickness, because of the thixotropic nature and surface tension of the paint, and the escape of air entrapped in the paint

being retarded; the air usually remains in the wet film for a while, temporarily occupying part of the coating volume.

• During actual application, control the measured WFT at the specified DFT plus 60 µm (2.4 mil).

Measure dry film thickness

• Because the gauge probe indents a soft film, accurate DFT measurement is not possible within the first few days after coating completion when initial film hardness is low.
• When measuring dry film thickness, place a calibration shim of known thickness over the coating at the test point, then gently press the gauge probe onto the shim to measure the film thickness through it.

Recoat interval table for a coating at 300 µm (12.0 mils) dry film thickness

Curing time table for a coating at 300 µm (12.0 mils) dry film thickness

Notes

• During application and curing, ensure continuous, adequate ventilation (see Safety Sheet 1433 and Information Sheet 1434)
• When used as a potable water tank coating, Solvent-free Epoxy Coating CSF 575 shall be applied at a temperature not below 10°C (50°F).
• The coating system for potable water tanks must be washed out after full cure and before commissioning.
• If used for the transport and storage of potable water, follow the application procedure for this coating

Final cleaning procedure

• All personnel shall wear waterproof clothing, boots, and gloves; these items shall be disinfected beforehand with sodium hypochlorite solution (1% active chlorine).
• All tank walls, bottoms, and tops shall be scrubbed with a brush or high-pressure sprayed with the above 1% active chlorine solution. Note: tank cleaning machines may also be used for spray cleaning.
• All areas shall be high-pressure washed with tap water, and the tank interior shall be dried.
• Concentrate the active chlorine solution on the tank bottom at approx. 1 L/10 m².
• Fill the tank with tap water to a depth of approx. 20 cm and retain this water in the tank for at least 2 h (maximum 24 h).
• After draining the above wastewater from the tank, rinse the entire surface thoroughly with tap water.
• After filling the tank with water, water samples may need to be taken according to local regulations to check bacterial content.
• The tank may be filled and put into service only after cleaning by the above procedure.

Pot life after mixing (at suitable application viscosity)

Warning Statement

• Solvent-free Epoxy Coating CSF 575 is a dedicated coating for potable water transport and storage tanks; it meets relevant potable water technical requirements and has obtained product certifications from multiple relevant

agencies.

• To meet these requirements, maintaining continuous, sufficient and unobstructed ventilation during application and curing is essential; only in this way can full cure be ensured.
• In addition, the tank or compartment shall be thoroughly cleaned in accordance with the latest TDS cleaning procedure before being put into potable water service.
• For any odour, taste, or contamination in potable water caused by the coating itself or retained solvents in the coating, PPG Protective & Marine

Coatings) shall not bear any liability or claims.

Safety Precautions

• For the coating and its recommended thinners, see Safety Sheets 1430 and 1431 and the relevant Material Safety Data Sheet
• Although solvent-free, the coating must be handled with care; avoid inhaling spray mist and contact of uncured paint with skin and eyes.
• In confined spaces, provide adequate ventilation to maintain good visibility.
• Although the coating contains no solvent, paint mist is not harmless; wear an air-supplied respirator during spray application.

Worldwide

Although PPG Protective and Marine Coatings is committed to providing completely consistent products to users worldwide, from time to time it may be necessary to make minor adjustments to specific products to comply with local/national regulations or environmental requirements. In the following cases, use the corresponding alternative version of the product data sheet instead.

Reference information

• For the conversion table, refer to Information Sheet 1410
• For product data, refer to Information Sheet 1411
• For safety guidance, refer to Information Sheet 1430
• Safety and health in confined spaces | explosion hazard — toxic hazard: refer to Information Sheet 1431
• For safe working in confined spaces, refer to Information Sheet 1433
• For ventilation guidance, refer to Information Sheet 1434
• For steel surface preparation, refer to Information Sheet 1490
• For mineral abrasive specifications, refer to Information Sheet 1491
• For relative humidity, substrate temperature and air temperature, refer to Information Sheet 1650

Quality guarantee

PPG warrants (1) that it has good title to the product, (2) that the product quality conforms to the relevant technical quality specifications in force at the date of manufacture of the product, and (3) that the supplied product is free of lawful claims by third parties for infringement of US patent rights. The above warranties are limited to those given by PPG and other express or implied warranties required by applicable laws and regulations for transactions and commercial practice; any abuse contrary to the stated conditions, and any other warranty for special purposes or uses, are excluded, and PPG shall be free from liability. To claim under this warranty, the buyer must notify PPG in writing within five (5) days of discovering the quality defect, and the date must be within the product's valid storage period or within one (1) year from delivery of the product to the buyer.

If the buyer fails to notify PPG of the defect as required above, this will prejudice the buyer's right to obtain compensation under this warranty from PPG!

Limitation of liability

In all cases, PPG shall not be liable for any indirect, special, incidental or consequential loss of any kind arising from or in connection with the use of this product (whether based on negligence, strict liability or tort).

The information in this product data sheet is based on laboratory tests we believe to be reliable, and is provided for guidance only. PPG may revise this information at any time as experience accumulates and product development progresses.

All recommendations and advice concerning the use of this product, whether in technical documents, in response to an enquiry or otherwise, are given to the best of our knowledge and are believed to be reliable. Our products and related information are provided for industrial users possessing the necessary knowledge and practical skills, and it is the end user's responsibility to determine whether the product is suitable for the specific use. The buyer, having performed such evaluation, proceeds entirely at its own risk.

The quality and condition of the substrate on site, and the many other factors affecting product use and application, are beyond PPG's control. Therefore, PPG accepts no liability for any loss, injury or damage arising from the use of the information in this product data sheet (unless otherwise provided in a written agreement). Different application environments, changes to the application process or extrapolation of the reference data may result in failure to achieve the expected coating quality.

This product data sheet supersedes all previous versions. The buyer is responsible for confirming that the data sheet in hand is the latest version before using the product. The latest version is published on the official website of PPG Protective & Marine Coatings:

www.ppgpmc.com. In case of discrepancy between the Chinese version and the original English version of the product data sheet, the English original shall prevail.

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