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DOUBLE-WALL TANKS
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Sierra Sales's  revolutionary Double Containment System is designed to alleviate the ever-changing environmental and
safety concerns regarding bulk chemical storage and containment for the 21st century.
Sierra Sales's unique tank-in-a-tank design enables users and specifiers to incorporate advanced performance and
safety features on a bulk handling system, which provides total containment protection. Sierra Sales's double-wall
construction is complete enclosed so that external matter, such as dust, rain and snow is prevented from collecting
in the outer containment tank.
Besides delivering unparalleled performance benefits, Sierra Sales's Doublewall Systems also contribute to your
company's bottom line by significantly reducing installation and procurement cost. Most assemblies can be shipped
fully assembled on either a standard or wide load flatbed trailer, which reduces comparable costs by an average
of 35 percent. |
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Part No.
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Gallons
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Diameter
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Height
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Manway/Fill Diameter
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5040---
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550
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76"
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65"
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18"
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5470---
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1,100
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76"
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104"
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18"
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5490---
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1,550
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76"
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136"
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18"
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5570---
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2,000
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102"
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103"
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18"
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5580---
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2,500
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102"
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122"
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18"
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5590---
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3,000
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102"
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142"
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18"
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5600---
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3,500
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102"
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158"
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18"
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5610---
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4,000
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102"
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178"
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18"
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5620---
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4,500
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102"
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197"
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18"
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5630---
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5,000
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102"
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216"
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18"
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5660---
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5,500
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120"
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172"
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18"
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5670---
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6,500
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120"
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199"
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18"
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Diagram Legend
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| A. |
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Flanged Outlets and other fitting designs
can be securely fastened and sealed to many of the
large flat areas located on the top section of the tank (optional). |
| B. |
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U-Vent Assemblies are available in a
variety of sizes to relieve vacuum pressures |
| C. |
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Top Lifting Eyelets make tank unloading
and site handling easier and safer. |
| D. |
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Fill and/or Draw Pipe Assemblies can
be installed to facilitate different material loading
or unloading requirements. |
| E. |
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U.F.O. (Unified Fitting Outlet) is uniquely
designed to mechanically seal fitting outlet through
both the inner and outer tank walls. Material unloading is easier and more cost effection than
pumping the contents from the top of the tank. (optional) |
| F. |
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Double Wall Tank Construction encloses
and interlocks out and inner tank to prevent rain,
snow and debris from entering outer containment tank.
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Outer Containment Tank provides 115%-120%
of inner tanks capacity for added safety factor.
Complies with 40 CFR-265.193. |
| G. |
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Molded-In Tie-Down Lugs interface with
optional cable restraint system to meet seismic
zone 4 requirements. |
| H. |
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Bolted and Threaded Manways are available
in sizes up to 24". Standard size is an 18"
threaded manway. |
| I. |
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OSHA-Approved Ladders are available with
and without cages in fiberglass and steel
construction. |
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Tank Saver Platform System adds mobility
and versatility, and can extend tank life.
Available on 102" models. |
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DOUBLE-WALL TANKS - SMALL CAPACITY TANKS
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 Sierra
Sales's smaller dual containment tanks provide added safety and environmental protection in more confined or remote
storage locations. The advance double-wall tank design is enclosed to prohibit freign matter from entering the
secondary contrainment tank and a unique octogonal shape provides optimal spacing and sealing surface for the industry's
most reliable transition fitting. |
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DUAL CONTAINMENTS - MINI BULK
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Part No.
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Style
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Gallons
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Diameter
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Height
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Manway/Fill Diameter
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1000200
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DCT
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35
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22"
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36"
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6"
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1000300
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DCT
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60
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26"
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41"
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14"
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59800000
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DCT
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120
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34"
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49"
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14"
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1000400
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DCT
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150
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34"
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60"
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14"
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1000500
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DCT
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275
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47"
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60"
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14"
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1000600
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DCT
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360
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53"
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60"
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14"
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1000800
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DCT
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500
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53"
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79"
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14"
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Diagram Legend
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Enclosed Double Wall Tank
prevents foreign matter from entering
outer containment tank. |
| A. |
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Top Draw-Tube Assembly
enables material contents to be safely
dispensed from the top of the tank. (optional) |
| B. |
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2" Vent provides
vacuum relief for interior tank. (optional) |
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Available in XLPE and HDPLE
resin packages. |
| C. |
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Transition Fitting
allows side safe installation and long term sealing
power through both walls of your dual containment tank. (optional) |
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Primary Tank is available
in both closed and open top tank designs. |
| D. |
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Large Flat Surface Area
provides ample space for a variety of fitting
sizes and styles. |
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Two Tanks within one
design provide double wall protection. |
| E. |
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Rib Reinforced Flat Top Design
provides ample surface space for
chemical feed pump mounting. |
| F. |
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Narrow Diameter provides
location versatility in that it can fit through
most any doorway. |
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Secondary Containment Tank
provides 120% of inner tanks' capacity.
Complies with CFR-264-193. |
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All Other Industrial Product Fittings
and accessories are available
wherever applicable. |
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