Double Wall Storage Tanks and Secondary Containment Systems Provide Protection Against Hazardous Chemical Spills

Double wall tanks provide the best protection against hazardous chemical spills into the environment
Assmann offers a full line of large and small double wall tanks

Double wall tanks (IMT) provide the best protection against hazardous chemical spills into the environment. Inner tank dome overlaps outer tank sidewall to prevent rainwater, snow and debris from entering into the containment basin. Our ability to heat trace and insulate make these tanks perfect for temperature sensitive chemicals. Molded-in lifting lugs (large tanks only) and upper fitting flats are standard. Molded-in lower fitting flats, along with a sturdy Assmann designed bottom outlet, reduce the cost of expensive double wall outlets. Assmann large double wall tanks are available in capacities from 150 to 8850 gallons, small double wall tanks are available in capacities from 20 to 405 gallons. 

All double wall tanks are designed with wall thicknesses equal to or greater than that required by ASTM D-1998 standards. Double wall tanks can be customized by adding Seismic zone 4 or 120 MPH wind load tie down assemblies, leak detection, ultrasonic level indicators, and tank ladder assemblies.

Plastic / Polyethylene Double Wall Tank Accessories for Secondary Containment Systems

Inner tank dome of Double Wall Tanks overlaps outer tank sidewall to prevent rainwater, snow and debris from entering into the plastic containment basin.

Large Double Wall Tank Specifications

Model
Number
Capacity
(US
Gals)
Dims
(in)
Weight (lbs)
Linear Polyethylene
Access
Opening
(in)
Pri Sp. Gravity Sec Sp. Gravity
Dia Hgt 1.5 1.9 2.2 1.5 1.9 2.2
IMT 150 150 47 44 N/A 65 82 N/A 65 82 7/16
IMT 250 250 47 61 N/A 95 110 N/A 95 110 7/16
IMT 550 550 60 73 N/A 130 151 N/A 130 159 16
IMT 625 625 47 113 117 152 176 127 162 191 16
IMT 1050 1050 72 87 185 205 233 191 244 283 16
IMT 1550 1550 72 123 283 359 416 309 392 454 16
IMT 2050 2050 72 159 551 691 809 596 748 875 16
IMT 2550 2550 96 119 457 579 671 499 632 732 16
IMT 3050 3050 96 138 636 806 933 694 879 1018 16
IMT 4050 4050 96 177 1178 1492 1728 1178 1492 1728 16
IMT 5250 5250 119 154 1230 1558 1804 1342 1699 1968 16
IMT 6550 6550 119 186 2028 2569 2974 2028 2569 2974 16
IMT 8850 8850 143 173 3112 3942 4565 3209 4065 4706 24


Model
Number
Capacity
(US
Gals)
Dims
(in)
Weight (lbs)
Crosslink Polyethylene
Access
Opening
(in)
Pri Sp. Gravity Sec Sp. Gravity
Dia Hgt 1.5 1.9 2.2 1.5 1.9 2.2
IMT 150 150 47 44 N/A 65 82 N/A 65 82 7/16
IMT 250 250 47 61 N/A 95 110 N/A 95 110 7/16
IMT 550 550 60 73 N/A 130 159 N/A 130 159 16
IMT 625 625 47 113 117 152 176 127 162 191 16
IMT 1050 1050 72 87 185 205 226 176 221 256 16
IMT 1550 1550 72 123 279 380 440 283 359 416 16
IMT 2050 2050 72 159 505 633 738 545 697 799 16
IMT 2550 2550 96 119 600 748 866 457 579 671 16
IMT 3050 3050 96 138 739 944 1093 636 806 933 16
IMT 4050 4050 96 177 1158 1476 1700 1178 1492 1728 16
IMT 5250 5250 119 154 1372 1753 2025 1230 1558 1804 16
IMT 6550 6550 119 186 2000 2570 2960 2028 2569 2974 16
IMT 8850 8850 143 173 2853 3614 4184 2942 3726 4314 24

Model number availability and individual specifications subject to change without notice. Gallonage and weights are approximate. All wall thicknesses conform to ASTM D-1998.

Small Double Wall Tank Specifications

Model
Number
Capacity
(US
Gals)
Dims
(in)
Weight (lbs) Weight (lbs) Crosslink Polyethylene
Pri Sp.G Sec Sp.G Pri Sp.G Sec Sp.G
Dia Hgt 1.5 1.9 2.2 1.5 1.9 2.2 1.5 1.9 2.2 1.5 1.9 2.2
IMT 20 20 26.125 21.375 N/A 17 N/A N/A 17 N/A N/A 17 N/A N/A 17 N/A
IMT 40 40 26.125 33.5 N/A 26 N/A N/A 26 N/A N/A 26 N/A N/A 26 N/A
IMT 65 65 26.125 47.75 N/A 36 N/A N/A 36 N/A N/A 36 N/A N/A 36 N/A
IMT 85 85 34.5 38.5 N/A 45 N/A N/A 45 N/A N/A 45 N/A N/A 45 N/A
IMT 120 120 34.5 51 N/A 56 N/A N/A 56 N/A N/A 56 N/A N/A 56 N/A
IMT 150 150 47 44 N/A 65 N/A N/A 65 N/A N/A 65 N/A N/A 65 N/A
IMT 165 165 34.5 66 N/A 69 N/A N/A 69 N/A N/A 69 N/A N/A 69 N/A
IMT 250 250 47 61 N/A 95 N/A N/A 95 N/A N/A 95 N/A N/A 95 N/A
IMT 405 405 47 76 N/A 74 82 N/A 77 90 N/A 74 77 N/A 77 82

Model number availability and individual specifications subject to change without notice. Gallonage and weights are approximate. All wall thicknesses conform to ASTM D-1998.

Assmann Corporation of America
300 North Taylor Road, Garrett, IN 46738 USA
888-357-3181 or 260-357-3181