Series 322
Tank Armor
Generic Type
Modified Polyamine Epoxy
Common Usage
An advanced generation, 100% solids, high build epoxy providing protection for the interior of steel storage tanks and vessels from various cargos including but not limited to crude oil and finished fuels. Unique curing mechanisms allow for single leg airless spray application.
Special Qualifications
Series 322 conforms to API 652 for lining above ground storage tanks.
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Primers
Self-priming or Series 61, N69F, 161. Note: For surfaces with light to moderate pitting, priming the surface prior to the Series 322 application may help to prevent holidays in the cured film. Note: The following maximum recoat times apply when topcoating with Series 322; Series 61, 14 days; Series N69F and 161, 30 days. If this time limit is exceeded, or if Series N69F or 161 is exterior exposed more than 14 days, the primer must be uniformly scarified prior to topcoating. Note: Series N69F or 161 are for crude oil service only.
Volume Solids
100% (mixed) †
Theoretical Coverage
1,604 mil sq ft/gal (39.4 m²/L at 25 microns). See APPLICATION for coverage rates. †
Finish
Semi-Gloss
Volatile Organic Compounds
Unthinned: 0.10 lbs/gallon (12 grams/litre)
Thinned 5%: 0.44 lbs/gallon (52 grams/litre) †
Number of Components
Two: Part A (polyamine) and Part B (epoxy)
HAPS
Unthinned: 0.0 lbs/gal solids
Thinned 5%: 0.37 lbs/gal solids
Surfacer/Filler/Patcher
Series 215. Note: For steel surfaces with isolated, heavy pitting, resurface the area with Series 215 prior to Series 322 application.
Curing Time
| Temperature | To Touch | Dry Through | Minimum to Recoat | Return to Service | Maximum to Recoat |
|---|---|---|---|---|---|
| 95°F (35°C) | 2 1/2 hours | 5 1/2 hours | 4 hours | 48 hours | 7 days |
| 75°F (24°C) | 7 hours | 18 hours | 16 hours | 48 hours | 7 days |
| 50°F (10°C) | 24 hours | 27 hours | 32 hours | 7 days | 7 days |
Note: These cure times are based on 20.0 mil (500 micron) dry film thickness. Cure time varies with surface temperature, air movement, humidity, and film thickness. Ventilation: When used as a tank lining or in enclosed areas, provide adequate ventilation during application and cure.
Recommended DFT
16.0 to 40.0 mils (400 to 1015 microns) in one or two coats. Note: For steel surfaces with pitting, recommended DFT is 30 to 40 mils (760 to 1015 microns). Note: Depending on the degree of pitting, a prime coat of Series 61 or resurfacing with Series 215 may help alleviate the potential for holidays in the cured film.
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