3,500 gallons, double wall, the 1.5 specific gravity grade
The Snyder 5600000N43 is a double wall chemical storage tank: a 3,500 gallon white high density linear polyethylene primary rated for a specific gravity of 1.5, or 43,785 pounds of contents against 29,190 for water, standing inside its own secondary containment in a shell 102 inches across and 158 inches tall, weighing 2,100 pounds. The 1.5 grade is the wall for the liquids between water and the heavy acids, coagulants, brines, caustic and hypochlorite as delivered, and it saves 400 pounds of resin against the 1.9 grade in the same shell. An 18 inch threaded, vented manway tops the primary, with a 3 year warranty.
Price it in one step. Freight to your ZIP shows in seconds; add the 3500 gallon tank to your cart above, or call 866-418-1777 if the site has a question in it.
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. The double wall carries its containment inside the outer shell, so 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 matches the volume to feed rate and delivery interval, and the tank sizing guide covers the reserve; 3,500 gallons takes a full tanker compartment with room to spare.
Grades on the 102 x 158 inch double wall, and the sizes beside it
| Part | Gallons | Diameter x height | Empty weight |
|---|---|---|---|
| 5600000N43 (this tank, 1.5 SG) | 3,500 | 102 x 158 in | 2,100 lb |
| 5600000N45 (1.9 SG) | 3,500 | 102 x 158 in | 2,500 lb |
| 5600000N40 (XLPE) | 3,500 | 102 x 158 in | 2,100 lb |
| 5600000N30 (sulfuric grade) | 3,500 | 102 x 158 in | 2,500 lb |
| 5590000N45 (1.9 SG) | 3,000 | 102 x 142 in | 1,840 lb |
| 5610000N30 (sulfuric grade) | 4,000 | 102 x 178 in | 3,200 lb |
The N45 is the 1.9 wall in linear resin and the N30 is the sulfuric acid grade, both 400 pounds heavier; the N40 is cross-linked polyethylene for oxidizers at this tank's weight. The 5590000N45 is the 3,000 gallon double wall, 16 inches shorter on the same base, and the 5610000N30 is the 4,000 gallon step up at 178 inches. All share the 102 inch footprint, so a slab poured for one takes the next.
Settled on the 3500 gallon tank? Freight to your ZIP and add to cart above; a written quote is one click away for the paperwork.
Openings, with the alarms that go on them
- Access: 18 inch threaded, vented manway on the primary, 158 inches up; vent outside on caustic and hypochlorite service, fill through a dip tube, and size the vent for a tanker's unload rate.
- Outlet: through both walls as one penetration, flanged, with an expansion joint and the valve carried off the slab; order the fitting in the material the chemical calls for.
- Service limit: 120 F / 48 C.
Two levels need watching: the primary, with a sender chosen for the chemical per the level gauge selection guide, and the space between the walls, which serves as the leak alarm and gets a switch, a shift check at the port, and a weekly log entry. 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 43,785 pounds at the rating: an engineered, full-contact slab under all of the floor, with straps holding the empty tank against wind, and at 158 inches the manway is reached from a fixed platform, not a ladder.
The first delivery
The driver's pump can deliver faster than the manway vent can breathe, so the vent is sized for the unload rate or the fill goes through a dedicated top bulkhead with its own vent line. The fill pipe runs to the floor so coagulant or caustic does not free-fall and foam. Somebody stands at the tank for the whole of the first delivery, checking the slab edge, the outlet fitting and the interstitial port as the level rises, and each delivery after it is logged with its date and strength.
Jobs it is bought for
Coagulant, caustic, brine and hypochlorite 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. One chemical to a tank, a label both inspectors can read, and the manway kept closed against vapor loss.
What the carrier needs from you
At 102 inches across and 158 inches long on the deck the 5600000N43 is oversize freight (NMFC 156600) on a flatbed at a lane rate; the freight cost estimator gives the flatbed number for your ZIP, and the listed price is before freight. A crane or a forklift with long forks sets 2,100 pounds on the slab. Water-test the primary and hold it long enough to prove the interstice stays dry, then drain and dry the tank before the first delivery. Note the pad height and the outlet height on the site plan while the tape is out; the next pipe run will need both.
Chemicals this resin is rated for, with the fitting and gasket to order
These are the chemicals listed for this tank at the concentrations shown. Each links to the full compatibility page; confirm your exact concentration and temperature there or in the chemical compatibility database before ordering.
- acetic acid and
- urea solution and PVC for
- aluminum sulfate
- calcium chloride
- ferrous sulfate
- magnesium chloride
- sodium carbonate and ozonated water. DEF is the one compatible chemistry here that calls for 316 stainless steel fittings rather than PVC or PP.
- DEF build. All of these chemistries specify EPDM gaskets.
- ethylene glycol
- ferric chloride
- ferric sulfate
- hydrochloric acid
- hydrofluoric acid
- hydrofluosilicic acid
- hydrogen peroxide
- peracetic acid
- phosphoric acid
- polyaluminum chloride
- potassium carbonate
- potassium hydroxide
- propylene glycol
- sodium bisulfate
- sodium bisulfite
- sodium hypochlorite
- sodium thiosulfate
- sulfuric acid and
- zinc orthophosphate. Gasket choice on that heavier tank varies by chemistry: aggressive oxidizers and strong acids such as sodium hypochlorite, hydrogen perox
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 5600000N43.
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 3500 Gallon Plastic Vertical Double Wall Liquid Chemical Storage Tank in White video (67 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.
