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ENGINEERED
STEEL PRODUCTS |
Priced
Full Line Products Catalog |
20
Technology Way West Greenwich, RI 02817
Toll free:(800) 421-0314 In RI:(401) 272-4570 Fax:(401)
421-5679 |
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Back to Product Category
FLAT
BOTTOM CYLINDRICAL TANKS |
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Open
Top Flat Bottom Cylindrical Tanks |
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One
piece molded heavy walled open top tanks designed
to withstand rugged service. Ideal for handling acids and
caustics. |
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Resin complies with U.S. Food and Drug Administration
regulation 21 CFR 177.1520 (c) 3.1 and 3.2. |
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AA
Series - Linear Polyethylene (PE) - Excellent chemical
and impact resistance for long dependable service.
Operating temperature up to 140° F. Open Top Tanks
allow convenient mixing and filling. Self-supporting. Trans-
lucent* for visible content level. |
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AB
Series - Polypropylene (PP) - Excellent chemical and
stress cracking resistance. Operating temperature up to
212° F. Self-supporting. Open Top Polypropylene Tanks
are not recommended for cold temperatures or high impact
applications. |
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*The
degree of translucency varies with wall thickness and
tank color |
AA Series |
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COVERS |
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AF Series |
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AH Series |
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FH Series |
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EF Series |
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AF
Series - Polyethylene
Covers - One piece molded polyethylene construction. Fits over the flange
of the tank.
AH Series - Polyethylene Hinged Covers - Molded polyethylene
construction. Flexible polypropylene hinge with
stainless steel rivets.
FH
Series - Polyethylene Hinged Covers - All polyethylene construction.
Heavy duty fabricated covers
EF Series - Bolted Polyethylene
Covers |
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STANDS |
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AK Series |
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AM Series |
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AN Series |
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AK
Series - Steel Stand - Heavy duty stands with corrosion resistant
coating. |
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AN
Series - Stainless
Steel Stand - Floor mounted agitator support stand. |
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AM
Series - Steel Stand w/ Mixer Mount Bar - Heavy duty stands with
corrosion resistant coating. |
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Order
Online, by Phone, or by E-Mail |
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~ Add
items to your online shopping cart ~
Click a Price of the item you wish to purchase. |
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Prices |
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Model
No. |
Capacity
(Gal) |
Size
(Dia x Ht) |
AA
Tank
Prices |
AB
Tank
Prices |
AF
Cover
Prices |
AH
Cover
Prices |
FH
Cover
Prices |
EF
Cover
Prices |
AK
Stand
Prices |
AM
Stand
Prices |
AN
Floor MT
Prices |
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5 |
11"
x 14" |
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7 |
10"
x 21" |
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7.5 |
12"
x 18" |
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8 |
13"
x 16" |
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10 |
13"
x 21" |
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12 |
15"
x 16" |
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15 |
15"
x 19" |
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16 |
14"
x 27" |
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16 |
15"
x 22" |
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17 |
18"
x 15" |
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25 |
14"
x 40" |
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28 |
22"
x 18" |
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30 |
18"
x 29" |
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36 |
15"
x 48" |
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40 |
18"
x 40" |
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55 |
22"
x 36" |
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65 |
22"
x 40" |
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70 |
24"
x 36" |
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73 |
30"
x 24" |
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85 |
28"
x 32" |
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90 |
24"
x 48" |
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90 |
30"
x 30" |
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100 |
28"
x 42" |
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102 |
27"
x 45" |
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105 |
24"
x 54" |
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105 |
36"
x 24" |
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110 |
30"
x 36" |
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125 |
36"
x 30" |
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150 |
31"
x 48" |
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155 |
36"
x 36" |
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165 |
31"
x 56" |
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180 |
30"
x 60" |
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200 |
36"
x 48" |
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260 |
36"
x 60" |
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260 |
39"
x 53" |
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275 |
42"
x 48" |
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315 |
48"
x 42" |
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325 |
36"
x 74" |
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330 |
45"
x 48" |
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360 |
48"
x 48" |
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440 |
52"
x 48" |
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500 |
52"
x 60" |
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550 |
48"
x 72" |
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575 |
42"
x 96" |
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575 |
60"
x 46" |
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650 |
48"
x 84" |
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675 |
66"
x 46" |
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700 |
55"
x 70" |
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800 |
60"
x 66" |
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800 |
72"
x 46" |
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1000 |
66"
x 72" |
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1100 |
60"
x 90" |
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1250 |
69"
x 84" |
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1350 |
82"
x 59" |
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1500 |
73"
x 84" |
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1850 |
82"
x 83" |
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2000 |
82"
x 90" |
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2450 |
95"
x 84" |
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2925 |
95"
x 97" |
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4250 |
120"
x 87" |
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4650 |
120"
x 98" |
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5700 |
120"
x 117" |
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6400 |
120"
x 131" |
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6800 |
120"
x 142" |
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(1)
All covers are polyethylene |
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(2) 2450
Gals. & above come with internal flange |
(3) TC4548AF
is a fabricated PE cover. |
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Order
Online, by Phone, or by E-Mail |
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~ Add
items to your online shopping cart ~
Click a Price of the item you wish to purchase. |
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TANK
ACCESSORIES |
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Insulated
and Temperature Controlled Systems |
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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) |
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Electronic
Heating Systems |
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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 |
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Rigid
Insulation |
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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 |
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Tie
Down Kits |
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PVC
coated wire cable and adjustable steel turn buckles provide an economical
and effective
restraining system. |
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Model
No. |
Tank Size In Gallons |
Prices |
TC1700TK |
1700 or less (except 750. 850. + 1500) |
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TC2000TK |
2000 to 3200 (and 750. 850 + 1500) |
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TC3600TK |
3600 & Larger |
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Seismic
Zone 4 Restraint Kits |
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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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MATERIAL
SELECTION |
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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: |
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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. |
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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. |
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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. |
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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. |
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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. |
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Considerations
to Material Selection |
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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. |
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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. |
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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.)
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. |
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Characteristics
and Physical Properties |
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General
Characteristics |
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Linear |
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XLPE |
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PP |
Maximum
Service Temp
Chemical Resistance
Stress Crack Resistance
General Toughness
Impact Resistance
Abrasion Resistance
Rigidity
Color
FDA Compliance
Outdoor Use
Weildable
Recyclable |
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140
F (60 C)
Very Good
Excellent
Very Good
Excellent
Good
Good
WH
Translucent
Yes
Yes
Yes
Yes |
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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) |
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Linear |
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XLPE |
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PP |
Density
(gm/cc) ASTM:D1505 |
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0.937-0.942 |
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0.937-0.942 |
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0.901-0.905 |
Environmental
Stress
Cracking (F-50hrs)
ASTIM:D1693 |
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>1,000 |
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>1,000 |
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>1,000 |
Tensile
Strength ASTIM:D638
Ultimate 2"/Min (PSI) Type IV |
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2,600 |
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2,600 |
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3,000 |
Elongation
at Break ASTIM:D638
2"/Min(%) Type IV |
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450 |
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450 |
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5 |
Flexural
Modulus (PSI) ASTIM:D790 |
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100,000-110,000 |
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100,000-110,000 |
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90,000-100,000 |
Brittleness
Temp ASTIM:D746 |
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<-94F
(-70 C) |
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-180 F (-118
C) |
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32 F (0 C) |
VICAT
Softening Temp ASTIM:D152B |
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240F |
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240F |
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300F |
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FITTING
LOCATIONS GUIDE |
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Specifying
Fitting Locations |
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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. |
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Vertical
Bulk Storage Tanks |
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Plan
View Calibration strip is at 0 degrees, in line with manway. Specify in
degrees
from 0 the location of fittings. |
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Elevation
View Indicate in inches the height
from the center of the fitting to the floor. |
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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) |
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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. |
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Horizontal
Tanks |
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End View
Round Horizontal |
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End View
Leg Horizontal |
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Side
View |
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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. |
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Cylindrical
Open Top Tanks |
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Plan
View if more than one fitting is being specified, indicate in degrees the
location of the fittings. |
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Elevation
View indicate in inches the height from center of the fitting to the floor. |
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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. |
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Rectangular
Tanks |
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Indicate
width, length and height of tank using inches.
Plan View indicate in inches the distance from edge of tank. |
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Elevation
View indicate in inches the height from the center of the fitting to the
floor. |
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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 |
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Cylindrical
Cone Bottom Tanks |
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Plan
View if more than one fitting is being specified, indicate in degrees the
location
of the fittings. |
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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 our sales dept. for minimum height of side fittings. |
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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. |
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Tank
Handling Installation and Use Guidelines |
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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 drivers 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 its 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 wont 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. |
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STORAGE
TANK SPECIFICATIONS |
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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: |
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PROPERTY |
ASTM |
VALUE |
UNITS |
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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 |
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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. |
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Wall
thickness in. (mm) |
ft-lb.
(J) to fail. |
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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) |
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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. |
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Flat Bottom Cylindrical Tanks,
Conical Bottom Bulk Storage Tanks, Conical Bottom Bulk Storage Tanks with
PolyEthylene Support Stands, Double Wall Bulk Storage Tank, 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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to Product Category |
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