PPG - SigmaGuard CSF 585 - Internal Tank Coating is a two component, solvent free, epoxy coating designed for internal coating of tanks.

Features

• Tank coating for drinking water
• Can be applied by single feed, airless spray equipment
• Reduced explosion risk and fire hazard
• Good visibility in confind space due to light colour
• Suitable for storage of drinking water up to 60c with Sigmacover 522 Primer
• Approved for drinking water by: Kiwa Holland
• Meets NSF/ANSI Standard 61 for potable water when applied and used in accordance with the terms described on the NSF website

Recommended Substrate Conditions and Temperatures

Carbon steel

• Steel; blast cleaned to ISO-Sa2½, blasting profile 50 – 100 µm (2.0 – 4.0 mils)
• If a holding primer is required SIGMACOVER 280 (DFT of 50 µm (2.0 mils)) or SIGMAPRIME 200 (DFT of 75 µm (3.0 mils)) should be used

Concrete

• Remove grease, oil and other penetrating contaminants according to ASTM D4258
• Abrade the surface per ASTM D4259 to remove all chalk and surface glaze or laitance. Achieve surface profile - ICRI CSP 3 to 5
• AMERCOAT 114 A may be used as a pit filler for certain applications. Check with PPG Technical Service for guidance on chemical resistance
• Maximum recommended moisture transmission rate is 3 lbs / 1,000 ft2 / 24 hours by moisture transmission test (ASTM F1869, calcium chloride test or by ASTM D4263, plastic sheet test)
• Alternatively, ASTM D4944 (Calcium Carbide Gas method) can be used, moisture content should not exceed 4%

Substrate temperature and application conditions

• 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 77.5:22:5

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

Airless spray

• Use heavy-duty, single-feed, airless spray equipment, preferably 60:1 pump ratio and suitable high-pressure hoses
• In-line heating or insulated hoses may be necessary to avoid cooling down of paint in hoses at low air temperature
• Application with 45:1 airless spray equipment is possible, provided in-line, heated high-pressure hoses are used
• Length of hoses should be as short as possible

Recommended thinner

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.)

Note: In case of using 45:1 airless spray equipment, the paint must be heated to approximately 30°C (86°F) in order to obtain
the right application viscosity

Brush/roller

• Brush: for stripe coating and spot repair only

Recommended thinner

No thinner should be added

Cleaning solvent

THINNER 90-83 (preferred) or THINNER 90-53

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