Series 94-H2O

Hydro-Zinc

Generic Type

Aromatic Urethane, Zinc-Rich

Common Usage

A single-component, moisture-cured, zinc-rich primer for steel structures, including the interior and exterior of steel potable water tanks. Provides outstanding long-term corrosion resistance when used as a primer in conjunction with other Tnemec coatings. It cures quickly and offers rapid recoat at surface temperatures down to 35°F. Note: When used in conjunction with cathodic protection, anodes or impressed current systems should not provide current demand more negative than –1.05 volts relative to a copper–copper sulfate reference electrode half-cell.

Special Qualifications

Certified (with or without 44-710 Urethane Accelerator) in accordance with ANSI/NSF Std. 61 for use on interior potable water tanks of 500 gallons or greater. Topcoating with Std. 61 certified Tnemec coatings is required. Contact your Tnemec representative for specific recommendations. Reference "Search Listings" section of the NSF website at www.nsf.org for details on the maximum allowable DFT. Meets zinc-rich primer requirements of AWWA D102-17 Standard for Inside System No. 3 & 5 and Outside System No. 3, 4 & 6. Series 94-H_2_O uses a zinc pigment which meets the requirements of ASTM D 520 Type III and contains less than .002% lead.

Series 94-H_2_O was tested in accordance with, and passed, the California Department of Public Health CDPH/EHLB/Standard Method Version 1.1, 2010 emissions testing and meets qualifications of LEED v4, Collaborative for High Performance Schools, and Living Building Challenge.

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Colors

  • Greenish-Gray

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Curing Time

Without 44-710

|Temperature †||To Handle||To Recoat|
|75°F (24°C)||2 hours||8 hours|
|55°F (11°C)||4 hours||12 hours|
|35°F (2°C)||6 hours||16 hours|
---† 50% relative humidity. Note: Refer to product listings on www.nsf.org for specific potable water return to service information. Curing time will vary with surface temperature, humidity and film thickness. Ventilation: When used in enclosed areas, provide adequate ventilation during application and cure.
Note: For faster curing, low humidity and low-temperature applications, add No. 44-710 Urethane Accelerator (see separate product data sheet). Note: For cure times to immersion service, reference the specified Tnemec interior topcoat product data sheet.

Volume Solids

62.0 ± 2.0% (mixed)

Number of Components

One

Recommended DFT

2.5 to 3.5 mils (65 to 90 microns) per coat.

Theoretical Coverage

996 mil sq ft/gal (24.4 m²/L at 25 microns). See APPLICATION for coverage rates.

HAPS

Unthinned: 1.68 lbs/gal solids
Thinned 15% (No. 49 Thinner): 1.68 lbs/gal solids
Thinned 10% (No. 3 Thinner): 1.72 lbs/gal solids
Thinned 10% (No. 2 Thinner): 2.84 lbs/gal solids

Volatile Organic Compounds

Unthinned: 0.74 lbs/gallon (89 grams/litre)
Thinned 15% (No. 49 Thinner): 0.74 lbs/gallon (89 grams/litre)
Thinned 10% (No. 3 Thinner): 1.57 lbs/gallon (188 grams/litre)
Thinned 10% (No. 2 Thinner): 1.56 lbs/gallon (187 grams/litre)

Topcoats

Interior: Series 20, 20HS, FC20, FC20HS, 22, FC22, L140, L140F, N140, N140F, V140, V140F, 141, 215, 406
Exterior: Series 27WB, 66, 66HS, L69, L69F, N69, N69F, 73, 115, 156, 161, 161HS, 215, 1026, 1028, 1029, 1074, 1074U, 1075, 1075U, 1080, 1081. Note: Certain topcoat colors may not provide one-coat hiding depending on method of application. Contact your Tnemec representative. Note: Series 94-H_2_O must be exterior exposed for three days prior to topcoating with Series 1028 or 1029. Note: Series 94-H_2_O must be exterior exposed for one day prior to topcoating with Series 27WB.

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