3,000 gallons, double wall, the 1.5 specific gravity grade
The Snyder 5590000N43 is a double wall chemical storage tank: a 3,000 gallon white high density linear polyethylene primary rated for a specific gravity of 1.5, or 37,530 pounds of contents against 25,020 for water, standing inside its own secondary containment in a shell 102 inches across and 142 inches tall, weighing 1,400 pounds. The 1.5 grade is the wall for the liquids between water and the heavy acids, coagulants, brines, caustic at moderate strength, and it saves 440 pounds of resin against the 1.9 grade in the same shell. The primary carries an 18 inch threaded, vented manway; the warranty is 3 years.
Talk to a person first? 866-418-1777 reaches a tank specialist, not a call center; or see freight to your ZIP and add the 3000 gallon tank to your cart above.
Buying the wall the liquid needs
A tank's specific gravity rating is the density of the heaviest liquid its wall is sized to hold for its service life; alum and ferric solutions, brines and most caustic and hypochlorite as delivered are all lighter than a 1.5 wall is sized for, so it carries them with margin without paying for the 1.9 wall that concentrated sulfuric acid needs. Check the liquid at its concentration in the chemical compatibility database, because weight rating and chemical resistance are separate properties, and work out the usable volume once thermal expansion and the interstice are accounted for with the Captor double wall freeboard sizing guide. With the containment inside the outer shell, the 102 inch footprint is the whole footprint; the SPCC 40 CFR 112 compliance walkthrough covers where that satisfies a spill plan on its own. The tank sizing calculator turns feed rate and delivery interval into a volume, and the tank sizing guide covers the reserve.
Grades on the 102 x 142 inch double wall, and the sizes beside it
| Part | Gallons | Diameter x height | Empty weight |
|---|---|---|---|
| 5590000N43 (this tank, 1.5 SG) | 3,000 | 102 x 142 in | 1,400 lb |
| 5590000N45 (1.9 SG) | 3,000 | 102 x 142 in | 1,840 lb |
| 5590000N40 (XLPE) | 3,000 | 102 x 142 in | 1,840 lb |
| 5590000N30 (sulfuric grade) | 3,000 | 102 x 142 in | 1,900 lb |
| 5580000N30 (sulfuric grade) | 2,500 | 102 x 122 in | 1,100 lb |
| 5600000N30 (sulfuric grade) | 3,500 | 102 x 158 in | 2,500 lb |
The N45 is the 1.9 wall in linear resin, the N40 is cross-linked polyethylene for oxidizers, and the N30 is the sulfuric acid grade; all three carry more resin than this tank. The 5580000N30 is the 2,500 gallon double wall, 20 inches shorter on the same base, and the 5600000N30 is the 3,500 gallon step up at 158 inches. All share the 102 inch footprint, so a slab poured for one takes the next.
Neighboring size a better fit? Every row links to its own page; freight to your ZIP is quoted on each, or call 866-418-1777.
Fittings, alarms and the space between the walls
- Access: 18 inch threaded, vented manway on the primary, 142 inches up; vent outside on caustic and acid service, fill through a dip tube, and size the vent for a tanker's unload rate.
- Outlet: through both walls at a single flanged penetration, with an expansion joint and the valve braced off the slab; the fitting material is chosen for the chemical at order time.
- Service limit: 120 F / 48 C.
Two levels to watch: the primary, with a sender chosen for the chemical per the level gauge selection guide, and the interstitial space, the leak alarm, with a float or conductivity switch, a glance into the port every shift, and a written check weekly. A tank filled from a tanker is also where overfills happen; the tank spillover redundancy guide covers the high-level alarm and automatic cutoff that stop a release before the interstice has to catch it. Full, the tank loads a 102 inch circle to 37,530 pounds at the rating: a slab engineered for it and in full contact under the whole floor, and straps on the empty tank against wind.
Delivery day at the manway
Unloading a tanker pushes air out faster than a stock manway vent can pass it; size the vent for that rate, or fill through a dedicated top bulkhead vented separately. The fill pipe runs to the floor so coagulant or caustic does not free-fall and foam. Watch the first delivery from the first gallon to the last, with eyes on the slab edge, the outlet fitting and the interstitial port as the tank fills, and each delivery after it is logged with its date and strength.
What it holds in practice
Coagulant, caustic and brine bulk storage at water and wastewater plants that cannot build a berm, chemical storage inside occupied buildings, and any regulated liquid of moderate density at plant scale at a site an inspector visits. Give it one chemical, a label that satisfies both inspectors, and a closed manway.
Getting it to the pad
At 102 inches across and 142 inches long on the deck the 5590000N43 is oversize freight (NMFC 156600) on a flatbed at a lane rate; the freight cost estimator prices it for your ZIP, and the listed price is before freight. A forklift with long forks or a small crane sets 1,400 pounds on the slab. Water-test the primary, confirm the interstice stays dry through the hold, then drain and dry before the first chemical delivery. Once it is full and holding, leave it alone for a day before the plumbing goes on; a settled tank is a quiet one.
What this tank is listed to hold
Each line is a liquid the resin is rated for, at the concentration shown, with the fitting and gasket to order. Follow the link for the full rating, or search the chemical compatibility database before ordering.
Freight and documents
Ships from: Lincoln, NE. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 5590000N43.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Product video. Watch the Snyder Industries 3000 Gallon Plastic Vertical Double Wall Liquid Chemical Storage Tank video (73 seconds) with dimensions, fittings and shipping notes.
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
