Snyder Industries 1550 Gallon 1.9 S.G. Vertical Double Wall HDLPE Liquid Chemical Storage Tank in Opaque White

Acid grade, containment and a narrow base

A tank sold for sulfuric acid is built and fitted for the acid's density and its exotherm, with fittings chosen for the acid rather than for general service; confirm the concentration you buy against the chemical compatibility database, because sulfuric at different strengths behaves as different chemicals, and the list below is the resin's rated chemistry. Never add water to a tank that holds acid; the fill order is water first, acid second. The double wall carries the containment inside the outer shell, so the 76 inch footprint is the whole footprint and the tank stands in a chemical room corner where a berm would take the whole room; the SPCC 40 CFR 112 compliance walkthrough covers where a double wall tank 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 76 x 136 inch double wall, and the low alternative

The N48 and N52 are the general chemical grades in the same shell, 190 pounds lighter, for caustic, coagulants and hypochlorite. The 5990302N45 puts nearly the same volume under a 77 inch ceiling on a 93 inch base at this tank's weight, with ASTM certification; the 5570000N48 steps to 2,000 gallons at 103 inches. Tall when the floor decides, low when the ceiling does.

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.

Openings, instruments, interstice

• Access: 18 inch threaded, vented manway on the primary, 136 inches up; vent it outside through a line the acid mist cannot corrode, and fill through a dip tube to the floor.
• Outlet: through both walls together, with an acid-rated transition supported off the floor; specify the fitting when ordering.
• Service limit: 120 F / 48 C; a tank that receives acid warm from a tanker or from dilution is watched against that limit.

Choose the level sender for sulfuric specifically with the level gauge selection guide; wetted parts rule out most standard senders, and a non-contact radar unit on the manway is the usual answer. The interstitial space is the leak alarm: a float or conductivity switch, a look into the port each shift, a logged check each week, and anything found there takes the tank out of service that day. Strap the empty tank; a 76 inch base under 136 inches of dense liquid has a high center of gravity, and full it loads that circle to 24,561 pounds at the rating.

What it holds in practice

Sulfuric acid at water and wastewater plants for pH control and at industrial sites for process use, inside buildings and at sites an inspector visits. Label the tank for the fire inspector and the workplace inspector at once, and keep the tanker's approach clear.

Getting it to the pad

The 5490000N30 ships palletized as LTL freight (NMFC 156600) at a class rate; the freight cost estimator turns your ZIP into a freight number; the price on this page is before freight. A forklift with long forks stands 970 pounds on the slab. Water-test the primary, confirm the interstice stays dry through the hold, then drain and dry completely before the first acid delivery; water left in an acid tank is the exotherm nobody wants. Once it is full and holding, leave it alone for a day before the plumbing goes on; a settled tank is a quiet one.

Chemical service ratings

The resin is rated for the liquids below at the concentrations shown; the fitting and gasket called out are the ones to order with the tank. Verify the exact service on the linked page or in the chemical compatibility database before ordering.

• Acetic Acid (60%) - PP/PVC fittings, EPDM gaskets
• Aluminum Sulfate (50%) - PVC fittings, EPDM gaskets
• Calcium Chloride (40%) - PVC fittings, EPDM gaskets
• DEF (32.5%) - 316SS fittings, EPDM gaskets
• Ethylene Glycol (100%) - PVC fittings, EPDM gaskets
• Ferric Chloride (50%) - PVC fittings, EPDM gaskets
• Ferric Sulfate (60%) - PVC fittings, EPDM gaskets
• Ferrous Sulfate (20%) - PVC fittings, EPDM gaskets
• Hydrochloric Acid (37%) - PVC fittings, Viton gaskets
• Hydrofluoric Acid (48%) - PP/PVC fittings, Viton gaskets
• Hydrofluosilicic Acid (26%) - PP/PVC fittings, Viton gaskets
• Hydrogen Peroxide (50%) - PVC fittings, Viton gaskets
• Magnesium Chloride (30%) - PVC fittings, EPDM gaskets
• Peracetic Acid (30%) - 316SS fittings, Aflas gaskets
• Phosphoric Acid (85%) - PVC fittings, Viton gaskets
• Polyaluminum Chloride - PVC fittings, EPDM gaskets
• Potassium Carbonate (50%) - PVC fittings, EPDM gaskets
• Potassium Hydroxide (saturated) - PVC fittings, EPDM gaskets
• Propylene Glycol - PP/316SS fittings, EPDM gaskets
• Sodium Bisulfate - PVC/PP fittings, EPDM gaskets
• Sodium Bisulfite - PVC/PP fittings, EPDM gaskets
• Sodium Carbonate (30%) - PVC fittings, EPDM gaskets
• Sodium Hypochlorite (
• Sodium Thiosulfate (40%) - PVC fittings, EPDM gaskets
• Sulfuric Acid (98%) - CPVC fittings, Viton gaskets
• Urea Solution (50%) - PP/PVC fittings, EPDM gaskets
• Zinc Orthophosphate - PP/316SS fittings, EPDM gaskets