Coatings for Potable Water Tanks
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      Coating Systems Available from SOMAY that have
              ANSI/NSF Std. 61 Approval for Lining
            Potable (Drinking) Water Storage Tanks
       


System (A)SOMAY/Carboline "Carboguard" 891

    2-component, 1:1 mix ratio, high solids, high build, high gloss, cycloaliphatic amine epoxy.

    Color:  White – No. S800

    Self-priming on steel and concrete surfaces.

    Surface Preparation:  Surfaces must be absolutely DRY at time of application

      Steel:  SSPC-SP10 (Near White Metal Blast)
      Fully Cured Concrete:  ASTM – D4258 (Cleaning Concrete)
                                       ASTM – D4259 (Abrading Concrete)

    Total Volume Solids:  75 ± 2%

    Theoretical Coverage Rate: 1,203 sq.ft./gal./1 mil dry film thickness (DFT)
    (= 30.0 sq.m./L @ 25 microns DFT)

    Recommended Application Rate: Min. 5 mils (127 microns) DFT per Coat, x 2 coats = min.10 mils (= 254 microns) DFT per 2 coats = max. 240 sq.ft./gal. per coat ÷ 2 = max. 120 sq.ft./gal. for 2 coats.

    Pot Life:  Approx. 90 minutes @ 75° F (24° C).

    Cure Time: 

      To recoat: 4 hours @ 75° F (24° C)
      For immersion: 5 days (120 hours) minimum @ 75°F, longer if below 75° F.

    Cost (4/1/2010):  "Cash & Carry", F.O.B. SOMAY:  $159.98/2-gal. Kit of A & B (= $79.99/gal.) = Approx. 32¢/sq.ft. for 1 coat (5 mils), or 64¢/sq.ft. for 2 coats (10 mils)

System (B) – SOMAY/Carboline "Carboguard" 561 (and 561 LT)

    2-component, 1:1 mix ratio, Epoxy Polyamide

    Satin Finish. 

    Color:  White (S800).  Other colors available by Special Order and at extra cost include White (0800), Off White (1898), Gray (0794), Tan (K203), Blue (0100 and 4169)

    Self-priming on steel and concrete surfaces

    Surface Preparation:  Surfaces MUST be absolutely DRY at time of application.

      Steel:  Immersion: SSPC-SP10 (Near White Metal Blast)
                Non-Immersion: SSPC-SP6 (Commercial Blast)
      Fully Cured Concrete:  ASTM-D4258 (Cleaning Concrete)
                                        ASTM-D4259 (Abrading Concrete)

    Total Volume Solids:  58% ± 2%

    Theoretical Coverage Rate: 930 sq.ft./gallon/1 mil DFT per coat (= 23.0 sq.m./L @ 25 microns DFT)

    Recommended Application Rate: Min. 5 mils (125 microns) DFT per Coat x 2 coats = min. 10 mils (= 250 microns), max. = 232 sq.ft./gallon per coat = 116 sq.ft./gallon for 2 coats.

    Pot Life:  Approx. 4 hours @ 75° F. (24° C)

    Cure Time:  To recoat: 7 hours @ 75°F (24° C)
               For Immersion:  7 days @ 75° F, longer if below 75° F.

    Cost:  (4/1/2010), "Cash & Carry", FOB SOMAY, $107.98/2-gal. Kit of A & B (= $53.99/gal.) = approx. 23¢/sq.ft. for 1 coat (5 mils) or 47¢/sq.ft. for 2 coats (10 mils).

    Note:  SOMAY does not normally stock this material.  Available by special order.

System (C)SOMAY/Carboline "Polibrid" 705

    2-component, 2:1 mix ratio, 100% solids, solvent-free, ultra high build, ultra fast cure time, flexible coating.  Aromatic elastomeric polyurethane.

    Color:  Tan

    Self-priming on steel; prime concrete with "Carboguard" 670-S

    Surface Preparation: Surfaces must be absolutely DRY at time of application.

      Steel:  SSPC-SP10 (Near White Metal Blast) to a 3.5 mils surface profile
      Fully Cured Concrete: ASTM – D4258 (Cleaning Concrete)
                                      ASTM – D4259 (Abrading Concrete)

    Total Volume Solids:  100%

    Theoretical Coverage Rate:

      1,604 sq.ft./gal./1 mil DFT (= 39.8 sq.m./L @ 25 microns DFT)

    Recommended Application Rate:

      Steel: Min. 25 mils DFT (625 microns DFT) in one coat (= max. 64 sq.ft./gal.)
      Concrete:  80 mils DFT (2032 microns DFT) in one coat (= max. 20 sq.ft./gal.)

    Pot Life:  Approx. 5 minutes @ 72° F (22° C)

    Cure Time:

      For light traffic:  Approx. 2 hours @ 72° F (22° C).
      For water immersion:  immediately after application.

    Cost (4/1/2010):  "Cash & Carry", F.O.B. SOMAY:  $12,598.50/150-gal. Kit of A & B (= $83.99/gal.) = approx. $1.25/sq.ft. for 25 mils DFT & $4.00/sq.ft. for 80 mils DFT.

    Min. Order:  150 gal. Kit.  Please call for current prices at time of job.

    Note: "Polibrid" MUST be applied by a factory-trained and approved "Polibrid" applicator. This material is not for sale except to approved applicators.

System (D)SOMAY/Vandex "Super"

    Vandex Super is a dry cementitious powder mixture of rapid-hardening portland cement, specially treated quartz sand, and a compound of active inorganic chemicals.  When mixed with clean water and then applied to clean, sound cement surfaces with "open" pores, Vandex, by capillary/crystallization action, will chemically seal the pores and create permanent in-depth waterproofing and protection of the concrete.  Vandex can be applied to the positive or negative pressure side of a tank or wall with equal effectiveness,and resists hydrostatic pressure (tested to 486 ft. head pressure).

    Color:  Cement Gray.  Note:  "White" available by Special Order at extra cost.

    Surface Preparation: Surfaces must be moist (damp) at time of application

      Fully Cured Concrete: Sandblast to SSPC-SP6 (Commercial Blast) or 4,000 P.S.I.water blast.

    Mix ratio: 5:2 = 5 parts Vandex mixture to 2 parts clean water (by volume).

    Recommended Coverage Rate:

      Concrete Walls: Min. 1.4 lbs./sq. yard  (.75 kg/sq.m./coat) or 320 sq.ft./50-lb. Vandex per coat; 2 coats recommended (2nd coat applied while 1st is "green") (= 30.3 sq.m./22.7 kg./coat)

      Concrete Slabs: Min. 2 lbs./sq. yard (1.0kg/sq.m.) or 225 sq.ft./50-lb. Vandex.  One coat recommended (= 22.7 sq.m./22.5 kg./one coat).

    Provides approximately 50 mils coating thickness.

    Pot Life: 20 minutes

    Setting Time: 60 minutes

    Cure Time:  Keep damp for min. 5 days (120 hours).  Water tanks can be carefully filled after 3 days (72 hours)

    Cost (9/1/06):  "Cash & Carry", F.O.B. SOMAY:  $134.95/50-lb. pail of Vandex Super. "Cement Gray". Applied at 300 sq.ft./pail for one (1) coat = approx. 42¢/sq.ft. for 1 coat.  Applied at 150 sq.ft./pail for two (2) coats = approx. 84¢/sq.ft. for 2 coats.

System (E) – SOMAY/Sanchem "NO-OX-ID" "A Special WW" (= Water Works)

    1-component, blend of petroleum waxes and oils, sometimes referred to as a "grease coating".  Contains very effective corrosion inhibitors to arrest existing corrosion and to provide a rust preventive barrier coating.

    Produces a non-drying, flexible, plastic-like film which will NOT crack, chip or peel, so it is long lasting, needing minimum maintenance for many years of effective service.

    Self-priming and self-healing.

    Appearance:  Light to Dark Brown wax.

    Total Volume Solids: 80% min; Total Solvent: 20% max.

    Surface Preparation:  Use hand scraping or brushing or power driven brush to remove any loose rust or mill scale; or prepare per SSPC-SP6 (Commercial Blast)

    Theoretical Coverage Rate: 1,283 sq.ft./gal./1 mil DFT

    Recommended Application Rate: 20 to 30 mils total dry film thickness
         or 43 sq.ft. for 30 mils (762 microns) DFT
         or 64 sq.ft. for 20 mils (508 microns) DFT

    Can be applied in one coat by hand (mitt covered), brush, roller or spray.

    (Note: Heat product to melting point (approx. 160° to 170° F) in order to spray apply.

    Cure Time:  Water tanks can be put back in service in 24 hours.

    Cost (9/1/06): "Cash & Carry", FOB SOMAY: $109.95/5-gal. pail (35 lbs.) (= $21.99/gal) = approx.  51¢/sq. ft. @ 30 mils DFT, or approx. 34¢/sq.ft. @ 20 mils DFT.

For all systems, all numbers are theoretical based on application to smooth, non-porous surfaces (like glass) and assume 100% transfer efficiency.  User must allow for losses in mixing and application and less than theoretical coverage rate due to rough, porous surfaces, etc.

All prices subject to change without notice.  Price in effect on date of shipment will apply.

SP-401-P-2010                                                                                                                                April 1, 2010


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