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VERTICAL BULK STORAGE TANKS

45 gal. - 500 gal. (46x76),
550 gal. (45x94), and
750 gal. have center manways
All others have offset manways.
(1) Subject to stocking inventory
(2) IA Series available only in blue color
(3) 45 Gal. has inverted calibrations
(4) 55 Gal. has no calibrations and flat top
(5) 110 & 220 Gal. have side indents for fork lift handling
IC – Commercial Series is designed to handle contents that have a maximum specific gravity of 1.5 at 73° F.
IA – Industrial Series is designed to handle contents that have a specific gravity of 1.9 at 73° F.
IX – Crosslinked Poly Series (x): Available upon request, contact sales office. (FOB Tn only).
     • Translucent for convenient product level viewing.
     • Flat bottom design provides for easy and cost efficient installation.
     • ASTM-D-1998-91 Specification compliance available
IMPORTANT- Review tank handling, installation & use guidelines, see below.
• The degree of translucency varies with wall thickness and tank color.
Tank sizes are nominal. Capacities indicate approximate volume.
• Calibrations on molded tanks indicate approx. vol.
• Tanks UV stabilized for outdoor use.

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Prices
Click Model No. to See Technical Drawing
Capacity (Gal)
Size
Vented Manway (in)
1C Tank Price
1A Tank Price
TA1628
20
16 x 28
8
~
22
20 x 20
8
~
25
18 x 29
5
~
TA1829
25
18 x 29
5
~
TA1841
40
18 x 41
5
~
45
18 x 51
4
50
18 x 53
5
~
55
20 x 38
8
65
23 x 42
8
65
24 x 46
8
65
23 x 43
8
~
75
23 x 49
8
75
23 x 49
8
~
100
23 x 64
8
100
28 x 43
8
~
105
23 x 63
8
~
TC3536 (5)
110
35 x 36
8
N-40318
120
38 x 31
5
~
N-44102
130
32 x 46
8
~
130
23 x 76
8
TA2382
135
23 x 82
8
~
150
30 x 56
8
~
160
28 x 66
8
165
31 x 58
8
165
31 x 56
16
~
TC4236
170
42 x 36
8
~
175
36 x 53
7
200
31 x 72
8
200
30 x 72
8
~
TA4048
210
40 x 49
5
~
210
32 x 67
16
TC3563 (5)
220
35 x 63
8
N-40320
220
42 x 44
5
~
TA3172
225
31 x 76
8
~
TC4642
250
46 x 42
8
250
35 x 68
8
250
30 x 89
8
~
300
35 x 81
16
300
35 x 87
16
300
42 x 59
16
300
45 x 60
16
TA3577
300
35 x 81
8
~
300
36 x 79
16
~
N-40302
305
46 x 49
16
~
310
32 x 94
16
~
TA4275
425
42 x 75
16
~
500
46 x 76
16
500
47 x 72
16
500
48 x 76
16
500
64 x 46
16
500
63 x 53
16
TA4676
500
46 x 76
8
~
TC6442
500
64 x 42
16
N-40148
500
48 x 73
16
~
N-40150
500
48 x 73
16
~
550
45 x 94
16
550
67 x 44
16
~
TA5266
550
52 x 66
8
~
600
52 x 66
16
650
56 x 70
16
(3) 45 Gal. has inverted calibratiions which indicates amount used.
(4) 55 Gal. has no calibrations and flat top
(5) 110 & 220 Gal. have side indents for fork lift handling
Polyethylene tanks may have some minor cosmetic imperfections due to the size and combination of mold sections that are used.
These imperfections have no effect on long-term tank performance or warranties.
Some models do not have technical drawings, please call us and we can provide them
.

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Click Model No. to See Technical Drawing
Capacity (Gal)
Size
Vented Manway (in)
1C Tank Price
1A Tank Price
700
64 x 60
16
750
46 x 119
16
750
48 x 103
16
~
850
48 x 124
16
850
48 x 118
16
~
850
54 x 92
8
TC6481
1000
64 x 81
16
1000
66 x 81
22
1000
69 x 74
16
N-40152
1000
64 x 80
16
~
N-40154
1000
64 x 80
16
~
1000
64 x 81
16
~
N-44111
1000
72 x 66
16
~
1100
87 x 53
16
~
N-40093
1100
87 x 53
16
~
1150
48 x 156
16
1150
86 x 57
16
1200
86 x 52
16
1500
64 x 121
16
1500
64 x 115
16
~
N-40146
1500
64 x 115
16
~
1500
64 x 115
16
1500
85 x 69
16
1550
87 x 65
16
1550
88 x 68
16
1550
87 x 65
16
~
N-40236
1550
87 x 65
16
~
1650
85 x 74
16
1700
86 x 74
16
1700
86 x 78
16
1700
87 x 74
16
~
N-40012
1700
87 x 74
16
~
2000
64 x 144
16
2000
64 x 152
16
~
N-47564
2000
64 x 152
16
~
2000
64 x 156
16
TA9083
2000
90 x 83
16
N-44125
2000
90 x 84
16
~
N-44127
2000
90 x 84
16
~
2100
87 x 87
16
2100
87 x 89
16
~
N-40241
2100
87 x 89
16
~
2100
102 x 69
16
~
2150
86 x 99
16
2200
86 x 96
16
2500
95 x 89
16
2500
95 x 92
16
N-40051
2500
95 x 91
16
~
N-40052
2500
95 x 91
16
~
2500
102 x 79
22
~
N-42384
2500
102 x 79
22
~
2500
90 x 100
16
2700
102 x 89
16
2800
95 x 98
16
3000
95 x 107
16
3000
90 x 120
16
N-40754
3000
95 x 109
16
~
N-40755
3000
95 x 109
16
~
3000
91 x 119
16
~
3000
102 x 93
16
~
N-42380
3000
102 x 93
16
~
N-43136
3000
102 x 93
22
~
N-43138
3000
102 x 93
22
~
Polyethylene tanks may have some minor cosmetic imperfections due to the size and combination of mold sections that are used.
These imperfections have no effect on long-term tank performance or warranties.
Some models do not have technical drawings, please call us and we can provide them
.

Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.

Click Model No. to See Technical Drawing
Capacity (Gal)
Size
Vented Manway (in)
1C Tank Price
1A Tank Price
3100
102 x 99
16
3200
95 x 112
16
3600
86 x 156
16
4000
95 x 140
16
4000
102 x 125
16
4000
102 x 125
16
~
4200
102 x 131
16
~
4300
120 x 105
16
4500
95 x 156
16
5000
102 x 152
16
N-40164
5000
102 x 152
16
~
N-40166
5000
102 x 152
16
~
5500
138 x 92
16
~
5600
120 x 138
16
N-40226
6000
102 x 182
16
~
N-40233
6000
102 x 182
16
~
N-40659
6100
119 x 140
16
~
N-40661
6100
119 x 140
16
~
6400
120 x 150
16
N-40224
6500
119 x 150
16
~
N-40232
6500
119 x 150
16
~
6500
120 x 147
16
~
N-42317
6500
120 x 147
16
~
TA7000
7000
142 x 125
16
~
N-40663
7800
119 x 176
16
~
N-40665
7800
119 x 176
16
~
8400
119 x 188
16
~
N-42062
8400
119 x 188
16
~
N-40543
9000
141 x 146
16
~
N-40231
9000
141 x 146
16
~
TA9500
9500
120 x 213
16
~
10000
141 x 160
16
~
N-43130
10000
141 x 160
16
~
11000
144 x 167
22
~
N-44011
11000
144 x 167
22
~
T10500
10500
142 x 177
16
~
N-43919
12000
141 x 193
16
~
N-43921
12000
141 x 193
16
~
12500
144 x 193
16
~
N-44017
12500
144 x 193
16
~
15000
141 x 244
16
~
N-43943
15000
141 x 244
16
~
N-43825
20000
165 x 242
22
~
N-43827
20000
165 x 242
22
~
Polyethylene tanks may have some minor cosmetic imperfections due to the size and combination of mold sections that are used.
These imperfections have no effect on long-term tank performance or warranties.
Some models do not have technical drawings, please call us and we can provide them
.

Order Online, by Phone, or by E-Mail

~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.

Click Model No. to See Technical Drawing
Capacity (Gal)
Size
Vented Manway (in)
1C Tank Price
1A Tank Price
3100
102 x 99
16
3200
95 x 112
16
3600
86 x 156
16
4000
95 x 140
16
4000
102 x 125
16
4000
102 x 125
16
~
4200
102 x 131
16
~
4300
120 x 105
16
4500
95 x 156
16
5000
102 x 152
16
N-40164
5000
102 x 152
16
~
N-40166
5000
102 x 152
16
~
5500
138 x 92
16
~
5600
120 x 138
16
N-40226
6000
102 x 182
16
~
N-40233
6000
102 x 182
16
~
N-40659
6100
119 x 140
16
~
N-40661
6100
119 x 140
16
~
6400
120 x 150
16
N-40224
6500
119 x 150
16
~
N-40232
6500
119 x 150
16
~
6500
120 x 147
16
~
N-42317
6500
120 x 147
16
~
TA7000
7000
142 x 125
16
~
N-40663
7800
119 x 176
16
~
N-40665
7800
119 x 176
16
~
8400
119 x 188
16
~
N-42062
8400
119 x 188
16
~
TA9500
9500
120 x 213
16
~
10000
141 x 160
16
~
N-43130
10000
141 x 160
16
~
11000
144 x 167
22
~
N-44011
11000
144 x 167
22
~
T10500
10500
142 x 177
16
~
N-43919
12000
141 x 193
16
~
N-43921
12000
141 x 193
16
~
12500
144 x 193
16
~
N-44017
12500
144 x 193
16
~
15000
141 x 244
16
~
N-43943
15000
141 x 244
16
~
N-43825
20000
165 x 242
22
~
N-43827
20000
165 x 242
22
~
Polyethylene tanks may have some minor cosmetic imperfections due to the size and combination of mold sections that are used.
These imperfections have no effect on long-term tank performance or warranties.
Some models do not have technical drawings, please call us and we can provide them
.

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~ Add items to your online shopping cart ~
Click a Price of the item you wish to purchase.

TANK ACCESSORIES
Insulated and Temperature Controlled Systems
A system consisting of flexible heating panels, thermostat and rigid foam insulation, designed to help
control and maintain the temperature of the product inside of our tanks. (Contact sales office for
complete details and price quotations)
Electronic Heating Systems
- Operate from 120 volts/AC power source
- Heater panels are located around tank for uniform heating
- All systems are custom designed, *Please supply anticipated minimum ambient temperature, wind
   velocity, and the desired minimum temperature requirement of contents
Rigid Insulation
- 2" spray on rigid closed cell polyurethane foam
- R value of 7.8 per inch of thickness
- insulation and mastic coating have excellent weathering characteristics
Tie Down Kits
PVC coated wire cable and adjustable steel turn buckles provide an economical and effective
restraining system.
Model No.
Tank Size In Gallons
Prices
TC1700TK
1700 or less (except 750. 850. + 1500)
TC2000TK
2000 to 3200 (and 750. 850 + 1500)
TC3600TK
3600 & Larger
Seismic Zone 4 Restraint Kits
Tank tie down assembly for wind and earthquake protection. Seismic zone 4 - 1994 Uniform
Building Code. Contact sales office for complete details.

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FITTING PRICES
Series
Type
Material
1/2"
3/4"
1"
1-1/4"
1-1/2"
2"
3"
4"
6"
Bolt-on Bulkhead Fittings Installed
*FZ
PVC
~
PP
~
~
CPVC
~
316 S.S
~
~
Bolt-on Bulkhead Fittings Loose
*FZ
PVC
~
PP
~
~
CPVC
~
316 S.S
~
~
Viton Gaskets
Viton Gaskets
For FA Series
1 Required
~
Bulkhead Fittings Installed
FA
PVC
~
~
PP
~
~
CPVC
~
~
~
~
316 S.S
~
~
~
~
Bulkhead Fittings Loose
FA
PVC
~
~
PP
~
CPVC
~
~
~
316 S.S
~
~
~
Viton Gaskets
Viton Gaskets
For FA Series
1 Required
~
Self-Aligning Bulkhead Install Teflon Seat (EPDM Gasket)
FC
PVC
~
~
~
~
~
~
Half Coupling Welded
FB
PE
~
PP
~
Full Coupling Welded
FD
PE
~
PP
~
~
Spigot Installed Needle Type
FE
PE
~
~
~
~
~
~
~
Spigot Installed Drum Type
FF
PE
~
~
~
~
~
~
~
Flange Assembly (Bulkhead fitting or half-coupling additional)
FY
PVC
Ball Valves True Union Threaded
FJ
PVC
~
Sight Gauge Installed
FL 
PVC
~
~
~
~
Sight Gauge Float Indicator
GO
PVC
~
~
~
~
~
~
~
~
CAM Action Couplers
GA
PP (Glass Reinforced)
~
~
90 Degree Cam Action
GB
PP (Glass Reinforced)
~
~
~
~
~
~
~
Cam Action Adapter
GH
PP
~
~
Cam Action 90 Degree
GI
PP
~
~
~
~
~
~
~
Float Valve Installed
FK
PVC
~
~
~
~
~
~
~
~
U-Vent (Bulkhead or half coupling additional)
GC
PVC
~
~
~
~
~
~
Siphon Tube (Bulkhead or half coupling additonal)
GD
PVC
~
PP
~
~
~
~
~
~
~
External Down Fill Dome Mounted Internal Down
GE
PVC
~
~
~
~
~
~
~
External Down Fill Side Mounted (With Internal Down)
GF
PVC
~
~
~
~
~
~
~
Internal Down Pipe Fitting
GG
PVC
~
~
~
~
~
~
~
*Bolt-On Bulkhead Fittings – provides a secure, reliable connection to the tank. This style of fitting is recommended
on our larger bulk storage tanks. All bolting hardware is 316 stainless steel; titanium and hastal-loy “C” bolt material
is also available.

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Manways
Series
Type
Material
8"
12"
16"
22"
22" Bolted
MW
Hinged Manway
PP
~
~
~
MW
Manway
PP
~
MW
Non-Vented Manway
PP
~
~
~
22" Bolted Manway has PE Foam Gaskets and SS Bolts
MATERIAL SELECTION

We offer you a selection of materials that are by far the best suited for molded tanks and containers for use with
aggressive corrosive chemicals as well as food products. Our 35 plus years of experience in rotational molding,
combined with our professional staff of chemical, mechanical and plastics engineers, enables us to provide you with
the highest quality rotationally molded tanks and containers available in the industry.

The following is a brief description of these materials:

Polyethylene

A high quality thermoplastic that has outstanding resistance to both physical and chemical attack. The overall general
toughness and excellent chemical resistance to a wide array of wet and dry industrial chemicals and food products make
polyethylene ideally suited for storage tanks and containers.

Polyethylene is translucent and its natural color ranges from slightly off white to creamy yellow, depending on wall
thickness and type. Ultraviolet light stabilizers are added for use in outdoor applications. Colors are available on request
for a nominal up charge. BPA-Free Material.

A) Linear Polyethylene

Linear Polyethylene is available as low, medium and high density. Most products offered in this catalog are molded of
linear medium density polyethylene (LMDPE) and linear high density polyethylene (LHDPE). They have superior
mechanical properties, high stiffness, excellent low temperature impact strength and excellent environmental stress
crack resistance. The linear polyethylene used meets specifications contained in FDA regulation 21CFR177.1520
(c) 3.1 and 3.2 and so may be used as an article or a component of articles intended for use in contact with food,
subject to any limitations in the regulations. Maximum operating temperature for linear polyethylene is 140° F. BPA-
Free Material.

B) Crosslinkable Polyethylene

Crosslinkable polyethylene is a high density polyethylene that contains a crosslinking agent which reacts with the
polyethylene during molding, forming a crosslinked molecule similar to a thermoses plastic. This reaction improves
toughness and environmental stress crack resistance. Crosslinked Polyethylene (XLPE) is not weldable and does
not meet FDA requirement 21CFR177.1520. Maximum operating temperature of crosslinked polyethylene is 150° F.

2) Polypropylene

Polypropylene is a rigid plastic that has a higher operating temperature limit than polyethylene: 212° F. It offers good
chemical resistance, has a high resistance to stress crack, and is autoclavable. Polypropylene (PP) is not recommended
for applications in sub-freezing temperature or where high impact strength is needed. A rough, irregular interior surface
is common characteristic of molded polypropylene.

Considerations to Material Selection

Elevated Temperatures
Continued or prolonged service with contents at elevated temperatures can shorten the life of a tank. The effects of
the temperature will depend on the chemical content and its specific gravity, tank size and configuration, material of
construction, wall thickness and if there are any external supports on the tank.

Exposure to Ultraviolet Light
Unprotected thermoplastics exposed to sunlight for an extended period of time, absorb ultraviolet (UV) light, which
can cause discolorations, embrittlement and eventual cracking. Fluorescent lighting has a similar effect. Elevated tem-
peratures can accelerate the embrittling process. These products are molded from materials utilizing the latest
technology for UV stabilizers which greatly reduce the harmful effects of UV light. For greater protection, keep tanks
out of direct sunlight or order dark colored tanks which will further retard the effect of UV light.

Environmental Stress Cracking
Certain surface active materials, although they have no chemical effect on polyethylene, can accelerate its cracking when
under stress, such as liquid detergents and ultra pure water- (see our chemical compatibility Chart on pages 46 - 49.)
Elevated temperatures tend to accelerate the cracking. Although all polyethylenes are subject to stress cracking, some
are more resistant to it than others. The degree of stress on the plastic has a direct bearing on its resistance, therefore
a tank and system should be designed to minimize stress. Chemtainer.com tanks are molded visually stress free,
employing materials that are highly resistant to environmental stress cracking, and hence are less prone to cracking
than fabricated tanks. Stress cracking agents are surface active materials. Proper care should be taken to reduce stress
at fillings, bands, tie down lugs, etc.

Characteristics and Physical Properties

General Characteristics
Linear
XLPE
PP
Maximum Service Temp
Chemical Resistance
Stress Crack Resistance
General Toughness
Impact Resistance
Abrasion Resistance
Rigidity
Color

FDA Compliance
Outdoor Use
Weildable
Recyclable
140 F (60 C)
Very Good
Excellent
Very Good
Excellent
Good
Good
WH
Translucent
Yes
Yes
Yes
Yes
150 F (65 C)
Very Good
Excellent
Very Good
Excellent
Good
Good

Off WH Trans
No
No
No
No
212 F (100 C)
Very Good
Excellent
Fair
Poor
Good
Good
Off WH
Opaque
Yes
Yes
Yes
Yes
Physical Properties
(Nominal Values)
Linear XLPE PP
Density (gm/cc) ASTM:D1505
0.937-0.942
0.937-0.942
0.901-0.905
Environmental Stress
Cracking (F-50hrs)
ASTIM:D1693
>1,000
>1,000
>1,000
Tensile Strength ASTIM:D638
Ultimate 2"/Min (PSI) Type IV
2,600
2,600
3,000
Elongation at Break ASTIM:D638
2"/Min(%) Type IV
450
450
5
Flexural Modulus (PSI) ASTIM:D790
100,000-110,000
100,000-110,000
90,000-100,000
Brittleness Temp ASTIM:D746
<-94F (-70 C)
-180 F (-118 C)
32 F (0 C)
VICAT Softening Temp ASTIM:D152B 240F 240F 300F
FITTING LOCATIONS GUIDE
Specifying Fitting Locations
It is very important to be as precise as possible when specifying tank fittings and accessories. Location, type and size
of fittings must be noted clearly on your drawing. If more than one fitting is being specified, mark each fitting with a
letter A, B, C etc. Dimensional drawings are available for all tanks. Download a blank generic drawing and send or
fax in with your order.
Vertical Bulk Storage Tanks
Plan View Calibration strip is at 0 degrees, in line with manway. Specify in degrees
from 0 the location of fittings.
Elevation View Indicate in inches the height
from the center of the fitting to the floor.
Example: Fitting A is at 90°, 48 up from button; Fitting B is at 180°, 30 up from bottom;
Fitting C is at 270°, 20 up from bottom.
Note: Use a dotted circle to indicate fittings which are on the opposite side of the elevation
drawing (see fitting B)
Most vertical storage tanks have 8 x8 flat sections at least every 90 degrees along the circumference at the bottom
of the side. These flats are ideal locations for bulk head fittings.
Horizontal Tanks
End View Round Horizontal
End View Leg Horizontal
Side View
Drain fittings are generally located in one of the ends of the tank, close to the
bottom. Indicate in inches any fitting(s) that are required in the top of the tank.
Cylindrical Open Top Tanks
Plan View if more than one fitting is being specified, indicate in degrees the
location of the fittings.
Elevation View indicate in inches the height from center
of the fitting to the floor.

Example: Fitting A is at 180°, 15 up from bottom;
Fitting B is at 270°, 30 up from bottom.
Note 1: Use a dotted circle to indicate fittings which
are on opposite side of the elevation drawing (see
fitting A )
Note 2: Never include tank flange in your measurements.

Rectangular Tanks
Indicate width, length and height of tank using inches.
Plan View indicate in inches the distance from edge of tank.
Elevation View indicate in inches the height from
the center of the fitting to the floor.

Example: 24 x 36 x 36 HT. Fitting is 18 in from side along the 36 wall, 18 up
from floor.
Note: Never include tank flange in your measurements

Cylindrical Cone Bottom Tanks
Plan View if more than one fitting is being specified, indicate in degrees the location
of the fittings.
Elevation View Indicate in inches the height from the
bottom of the straight side to the center of the fitting. Do not include the cone.
Stands have a lip 16 high. Consult sales office for minimum height of side fittings.
Example: Fitting A is a 0°, 15 up the straight side; fitting B is at 90°, 20 up from straight side; C is in cone flat.
Tank Handling Installation and Use Guidelines
Although our tanks are extremely durable, improper handling and installation can result in damage to tank, fittings,
and accessories. Failure to comply with handling and installation instructions voids all warranties.

1. At delivery, inspect your tank immediately for defects or shipping damage. Any discrepancies, or product problems,
    should be noted on both the driver’s bill of lading and your packing list.
2. When unloading your tank from the delivery truck, avoid its contact with sharp objects. Forklift blades can cause
    significant damage if proper precautions are not taken. Do not allow tanks to be rolled over on the fittings. Large
    bulk storage tanks, whenever possible, should be removed from truck bed by use of a crane or other suitable lifting
    device. OSHA regulation 29CFR 1910.178 through 1910.189 addresses specific standards for hoisting and lifting.
    Keep unloading area free of rocks, sharp objects, and other materials that could damage the tank. If tank is unloaded
    on it’s side, carefully brace to prevent rolling.
3. Support bottom of tank firmly and completely. Concrete pads provide the best foundation. However, when seismic
    and wind factors are not being considered, tanks with a base load bearing of less than 800 pounds per square foot
    require a firm, even, compacted bed of sand, pea gravel, or fine soil that won’t wash away. Tanks with a base load
    bearing of 800 pounds per square foot, or greater, require a reinforced concrete base. Steel support stands concent-
    rate the loaded tank weight onto the stand leg pads. It is recommended that stands are mounted on a concrete base.
    Bolting of stands is necessary to prevent movement due to agitation, wind, seismic loads and accidental contact.
4. Install tanks in an area that is accessible. Ease of maintenance and removal should be considered.
5. Test by filling tank with water prior to use, to prevent material loss through unsecured fittings, shipping damage, or
    manufacturing defects. Tanks should be tested for a minimum 5 hours.
6. Plastic screw on bulkhead fittings are designed to be hand tightened. Over tightening can cause fittings to leak.
7. Support sides of rectangular tanks. In general, tanks with heights greater than 18” must be supported. However,
    specific applications must be considered: smaller tanks with contents that have high specific gravity and/or elevated
    temperatures must be supported.
8. Do not mount heavy equipment on tank sides.
9. Do not allow weight on tank fittings. Fully support pipes and valves.
10. Use expansion joints to prevent damage at fittings from the differential expansion and contraction of the piping and
      tanks.
11. Tanks are designed for use only in the atmospheric storage of chemicals, never for vacuum or pressure applications.
12. Immersion heaters should never touch the walls of the tank. Minimum spacing should be 3” - 4” from wall.
13. Refer to the chemical capability chart we can get for you, as a guide. Be certain tank, fittings, and fitting gasket
      material are compatible with chemicals at the anticipated operating temperatures. Contact our technical staff for
      information on chemicals not listed, or when uncertain conditions exist.
14. Protect tanks from impact, especially at temperatures below 40° F.
15. Confined spaces must be considered hazardous. Do not enter tank without first taking proper precautions.
16. Tank sizes as listed are nominal and calibrations on molded tanks are only approximates, but provide an indication
      of volume. Polyethylene tanks expand and contract which will effect volume. The degree in which this occurs
      depends on the size of the tanks, wall thickness, specific gravity of contents, temperature of contents and ambient
      temperatures.
STORAGE TANK SPECIFICATIONS

1.0 DESCRIPTION OF TANK
     1.1 SPECIFICATIONS
     1.2 GENERAL

           These are one piece tanks, rotationally molded of linear medium or high density polyethylene or high density
           crosslinkable polyethylene (XLPE). Refer to material type in the tank charts for availability. Tanks come in a
           variety of shapes, are available in closed head designs with flat bottom (IC, IA & IX series), conical bottom (JA
           & JC series), round horizontal (LC & LA series) or oval horizontal (MC & MA series).These tanks can be
           furnished with various accessories as per customer specifications and are capable of holding aggressive chemicals
          at atmospheric pressure. Open top mixing and processing tanks are available in cylindrical, conical bottom and
          rectangular designs.

2.0 MATERIALS
     2.1 LINEAR POLYETHYLENE

           A high quality, chemically resistant plastic with high stress crack and impact resistance. Linear polyethylene is
           translucent and exhibits properties that are ideal for applications that are exposed to low temperatures and/or
           high impact. Unlike thermosets, linear polyethylene is weldable, thus allowing for greater flexibility when
           designing modification to our standard tanks. The plastic complies with USDA and FDA regulations for storage
           and processing of food. Linear polyethylene is fully recyclable and thereby provides a convenient method of
           disposal.
     2.2 CROSS-LINKED POLYETHYLENE
           High density cross-linked polyethylene has excellent low temperature impact and environmental stress-crack
           resistance. This polyethylene is a thermoset, thus does not permit the utilization of welded tank connections.
           Cross-linked polyethylene does not have USDA or FDA compliance for storage of processing edibles and is
          not recyclable.
     2.3 ULTRA VIOLET LIGHT STABILIZERS AND FILLERS
           The plastic does contain a minimum of 0.25 to a maximum of 0.50 long term U.V. stabilizer. It does not contain
           any fillers.
     2.4 PIGMENT
           Pigment can be added at purchaser's request. These pigments would be compatible with the polyethylene and
           will not exceed 0.5% dry blended and 2% compounded in of the total weight.

3.0 TANK CONSTRUCTION
     3.1 MECHANICAL PROPERTIES

           The minimum for the properties of the material shall be as follows based on molded parts:

PROPERTY
ASTM
VALUE
UNITS
Density

ESCR Spec. Thickness
125 Mils F-50
Tensile Strength
Ultimate 2”/min.
Elongation at break
2”/min.
Vicat Softening Temp.
Brittleness Temp.
Flexuarl Modulus
D1505


D1693
D638
Type IV Spec.
D638
Type IV Spec.
D1525
D746
D790
59 (0.937 - 0.942)


1000

2600

450
240
-180
100,000-110,000
#/ft3((gm/cc)


Hrs.

PSI

%
Deg. F
Deg. F
PSI
     3.2 APPEARANCE
           The finished surface of the tank shall be free as commercially practicable from visual defect such as foreign
           inclusions, air bubbles, pin holes, craters, crazing and cracking that will impair the serviceability of the tank.
     3.3 CUT EDGES
           All edges cut out i.e., open top flanges, manways, shall be trimmed to have smooth edges.
     3.4 DIMENSIONS AND TOLERANCES
           General - all dimensions will be taken with the tank in its proper, usable position and unfilled. Tank dimensions
           will represent the exterior measurements.
           3.4.1    Outside diameter -- The tolerance for the outside diameter including out of roundness, shall be +/-3%.
           3.4.2 Shell wall and head thickness - The tolerance for thickness shall be +/-20% of the design thickness. The
                    total amount of an area on the low side of the tolerance shall not exceed 10% of the total area and individual
                    area shall not exceed 1 ft. 2 (.09m2) in size.
     3.5 PERFORMANCE REQUIREMENTS
           The following performance requirements shall be conducted on samples taken from the manway cut out area or
           where fittings are inserted in each tank
           3.5.1 Low Temperature Impact Low temperature impact is determined by using a 30 lb. Falling dart at -20
           degrees F.
Wall thickness in. (mm)
ft-lb. (J) to fail.
Less than & including 0.25 in.(6.6 mm)
0.26 in.(6.6 mm) to & including 0.50 in.(12.9 mm)
0.51 in.(12.9 mm) to & including 0.75 in.(19.3 mm)
0.76 in.(19.3 mm) to & including 1.00 in.(25.4 mm)
90 (122.0)
100 (135.5)
150 (203.2)
200 (271.0)
           3.5.2 Percent Gel - for crosslinked polyethylene
                    The percent gel level is determined by using the test method found in ASTM
                    D1998. The percent gel level for crosslinked tanks on the inside
                    0.125 in. (3.2mm) of the wall shall be a minimum of 60%.
            3.5.3 Visual Inspection - The tank is visually inspected to determine such qualities as are discussed in Section
                     3.2, Appearance.

4.0 MARKINGS
     4.1 The tank is marked to identify the producer, date (month and year) of manufacture, capacity
           and serial number.
     4.2 The proper caution and/or warning signs are affixed to the tank
     4.3 Tank capacities should be based on total tank volume.

5.0 PACKAGING AND SHIPPING
     5.1 All fittings and flange faces shall be protected from damage by covering with suitable plywood, hard-board or
           plastic securely fastened. Tanks shall be vented at all times.
     5.2 Pipe and tubing, fittings and miscellaneous small parts shall be packaged. Loose items which may scratch the
           interior surface shall not be placed inside the tank during shipment. Additional protection, such as battens, end
           wrapping, cross bracing, or other interior fastenings may be required to assure each individual equipment pieces
           are not damaged in transit.
     5.3 Upon arrival at the destination, the purchaser is advised to inspect for damage in transit. If damage has occurred,
           a claim should be filled with the carier by the purchaser. The supplier should be notified if the damage is not first
           repaired by the fabricator prior to the product being put into service. The purchaser accepts all future responsi-
           bility for the effect of the tank failure resulting from damage.
     5.4 It is recommended that the tank be hydrostacially tested at the time of installation.
Vertical Bulk Storage Tanks, Storage Tanks, Vertical Bulk Tanks, Polyethylene Tanks, Commercial Series Vertical Tanks, Industrial Series Vertical Tanks, and Tanks from your source for material handling equipment.

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