*Molded Plastic Tanks*
Types of Molded Plastic Tanks
Types of Resins
Our molded plastic tanks are offered in four types of resins: High Density Polyethylene (HDPE), Cross-Linked High Density Polyethylene (XLPE), Polypropylene (PP) and Polyvinylidene Fluoride (PVDF). Each resin is well suited for various applications:
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Material Resin
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Advantages and Applications
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Do Not Use With:
|
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High Density Polyethylene (HDPE)
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- Hard, smooth finish
- White in color
- Good temperature resistance
- Storing caustics
- Metal finishing
- Storing organic and inorganic acids
- Water treatment
- Dispensing lab and photo chemicals
- Plating
- Brine
|
- Strong oxidizing agents
- Aromatic Hydrocarbons
- Halogenated-aliphatic hydrocarbons
- Liquefied Petroleum gas
- Solvents
|
| Cross-Linked High Density Polyethylene (XLPE) |
- Suitable for many corrosives not handled by FRP
- Natural/Yellow in color
- Storing corrosives, including sulfuric, hydrochloric and hydrofluoric acids
- Storing sodium hypochlorite
- Storing organic and inorganic chemicals and compounds
- Chemical processing
- Storing boiler treatment chemicals
- Water and wastewater treatment
|
- Strong oxidizing agents
- Aromatic hydrocarbons
- Halogenated-aliphatic hydrocarbons
- Liquefied petroleum gas
- Solvents
|
| Polypropylene (PP) |
- Good resistance to many organic chemicals
- Off-White in color
- Plating and pickling lines
- Sanitary process tanks
- Etch tanks for processing silicone wafers
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- Strong oxidizing agents
- Aromatic or chlorinated hydrocarbons
- Sub-freezing temperatures
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| Polyvinylidene Fluoride (PVDF) |
- Superior resistance to inorganic acids, strong oxidizing agents and halogenated compounds
- Off-White in color
- High-purity, does not contaminate process fluids
- Etch tanks for processing silicone wafers
- Ultra-pure water storage (not potable)
- Precious metal recovery
- Storing and processing halogenated compounds
- Storing bleach and sulfuric acid for pulp and paper processing
|
- Ketones, esters and hot, concentrated caustics
- Nascent chlorine gas and concentrated caustic soda
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Typical Properties
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Material Resin
|
General Chemical Resistance
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Stress-Crack Resistance
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Max. Service Temp.
|
Brittleness Temp.
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Impact Resistance
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Can Be Welded (HotGas)
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Food-Grade Acceptability Natural, Unpigmented
|
|
HDPE
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Very Good
|
Good
|
140°F
60°C
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-94°F
-70°C
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Good
|
Yes
|
Yes
Natural
and Black
|
|
XLPE
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Very Good
|
Excellent
|
140°F
60°C
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-180°F
-118°C
|
Excellent
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No
|
No
|
|
PP
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Very Good
|
Excellent
|
220°F
104°C
|
32°F
0°C
|
Fair
|
Yes
|
Yes
|
|
PVDF
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Excellent
|
Excellent
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230°F
110°C
|
-40°F
-40°C
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Fair
|
Yes
|
Yes
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