Double-Wall Plastic Tanks
No need for separate spill-control pallets or trays—comply with EPA regulations for storing hazardous liquids with just one tank. These tanks have two walls, so if the primary compartment ruptures, the secondary one will contain the leak. It can hold 110% of the primary tank's volume and will also protect it from damage in case of impact.
Made of polyethylene, these tanks can store a broader range of chemicals than steel double-wall tanks. The plastic contains UV inhibitors so they can be used outside.
These tanks have a flat space on top where you can mount a metering pump. Because these tanks meet NSF/ANSI 61 for drinking water, you can meter chemicals stored in them into your drinking water system.
For technical drawings and 3-D models, click on a part number.
| Cap., gal. | Wd. | Dp. | Ht. | Primary Compartment Opening (No. of) | Secondary Compartment Opening (No. of) | Color | Max. Temp., °F | Specifications Met | Includes | Each | |
Polyethylene Plastic | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 | 14" | 14" | 22" | 4" Fill Opening Dia. (1) 3/8" Opening Dia. (1) 2 NPT Female Opening (1) | 1 NPT Female Opening (1) | Blue | 130° | EPA 40 CFR 264.175 NSF/ANSI 61 | Vented Fill Cap | 0000000 | 0000000 |
| 20 | 18" | 18" | 24" | 8" Fill Opening Dia. (1) 3/8" Opening Dia. (1) 2 NPT Female Opening (2) | 1 NPT Female Opening (1) | Blue | 130° | EPA 40 CFR 264.175 NSF/ANSI 61 | Vented Fill Cap | 0000000 | 000000 |
| 40 | 20" | 20" | 38" | 8" Fill Opening Dia. (1) 3/8" Opening Dia. (1) 2 NPT Female Opening (2) | 1 NPT Female Opening (1) | Blue | 130° | EPA 40 CFR 264.175 NSF/ANSI 61 | Vented Fill Cap | 0000000 | 00000000 |
| 70 | 24" | 24" | 41" | 8" Fill Opening Dia. (1) 3/8" Opening Dia. (1) 2 NPT Female Opening (2) | 1 NPT Female Opening (1) | Blue | 130° | EPA 40 CFR 264.175 NSF/ANSI 61 | Vented Fill Cap | 0000000 | 00000000 |
Expansion Tanks for Drinking Water
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These tanks meet NSF/ANSI Standard 61 for use with drinking (potable) water. Use them to accommodate the expansion of heated water and provide a cushion of compressed air in closed water-heating systems. All of these tanks have a diaphragm, which completely separates air and water. They prevent water loss by eliminating the need to expel hot water from systems during each heating cycle.
For technical drawings and 3-D models, click on a part number.
Tank End (E1) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Capacity, gal. | Dia. | Overall Lg. | Connection Pipe Size  | Pipe Connection Thread Type | Pipe Connection Gender | Wall Gauge, ga. | Max. Temp., °F | Max. Pressure, psi | Diaphragm Material | Specifications Met | Each | |
Beige-Painted Steel | ||||||||||||
| 2.1 | 8" | 11" | 3/4 | NPT | Male | 16 | 200° | 150 | Butyl Rubber | NSF/ANSI 61 | 000000 | 000000 |
| 4.5 | 10 1/2" | 13 1/2" | 3/4 | NPT | Male | 16 | 200° | 150 | Butyl Rubber | NSF/ANSI 61 | 000000 | 000000 |
| 8.5 | 12 1/2" | 19 3/16" | 3/4 | NPT | Male | 16 | 200° | 150 | Butyl Rubber | NSF/ANSI 61 | 000000 | 000000 |