Snyder Industries 4100 Gallon HDPE Vertical Chemical Storage Tank in White

Specifying a 4,100 gallon chemical tank

Three checks come before the order. The density of the liquid at delivered concentration against the 1.9 rating. The resin against the chemical in the chemical compatibility database, since the list below is the resin's rated chemistry and resistance is a separate property from weight. And the volume against feed rate and delivery interval in the tank sizing calculator, with the reserve the tank sizing guide describes; a tanker's full load is the number that usually decides this size. The pad is an engineered slab in full contact under the 102 inch floor, sized for the rated load and level enough that 130 inches of tank stands plumb.

The 102 x 130 inch mold and the 120 inch alternatives

The 7360000N45 is the same mold with 250 more pounds of resin, for the site that wants the thickest wall available at this size; the N46 is another resin option at the same 850 pounds. The 7421100 tanks put 4,000 to 4,300 gallons on a 120 inch base at 104 inches tall, 26 inches shorter than this tank on a pad 18 inches wider, for the chemical room with a low ceiling.

Comparing across brands too? Call 866-418-1777; we carry Norwesco, Snyder, Chem-Tainer, Enduraplas and Bushman and will say which one fits, or price the freight first.

Openings, instrumentation, sampling, labels

• Outlet: 3 inch, at the bottom of the sidewall; flanged transition, expansion joint, valve supported off the slab, bolts re-checked after the first fill.
• Access: 18 inch threaded, vented manway, vented outside on caustic and acid service; fill through a dip tube to the floor.
• Service limit: 120 F / 48 C.

Choose the level sender for the chemical with the level gauge selection guide; at 130 inches a hydrostatic sender at the outlet avoids the ladder. Sample the tank the way the bulk tank chemical sampling protocol describes, because a 130 inch column of coagulant stratifies and a top sample lies. Label it for both inspectors at once, per the tank label and signage compliance guide. And size the containment before the tank: a berm around a 102 inch tank is a large one, and the Snyder Captor 110 percent containment comparison shows where a double wall tank is the smaller and cheaper footprint.

Put to use

Bulk caustic, ferric, alum and acid at water and wastewater plants; reagent storage on a process floor; fertilizer and brine at agricultural sites. Four thousand gallons is the size at which the tanker delivers a full load and the tank turns over on a schedule the chemistry tolerates; for hypochlorite that schedule is short, and two smaller tanks are often the better plan.

Receiving a tanker into a polyethylene tank has its own discipline. 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 caustic or coagulant does not free-fall and foam. Dense liquids heat up when diluted, so a tank that is topped off with water for a batch job is filled water first, chemical second, and never the other way around. And the first delivery into a new tank is watched from start to finish, with the slab edge and the outlet flange checked as the level climbs.

How it ships

At 102 inches across and 130 inches long on the deck the 7360000N43 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 850 pounds on the slab. Strap it while empty, water-test in stages with a hold, then drain and dry before the chemical delivery.

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.

• Acetic Acid (60%)
• Aluminum Sulfate (50%)
• Calcium Chloride (40%)
• DEF (32.5%)
• Ethylene Glycol (100%)
• Ferric Chloride (50%)
• Ferric Sulfate (60%)
• Ferrous Sulfate (20%)
• Hydrochloric Acid (37%)
• Hydrofluoric Acid (48%)
• Hydrofluosilicic Acid (26%)
• Hydrogen Peroxide (50%)
• Magnesium Chloride (30%)
• Peracetic Acid (30%)
• Phosphoric Acid (85%)
• Polyaluminum Chloride
• Potassium Carbonate (50%)
• Potassium Hydroxide (saturated)
• Propylene Glycol
• Sodium Bisulfate
• Sodium Bisulfite
• Sodium Carbonate (30%)
• Sodium Hypochlorite (under 16.5%)
• Sodium Thiosulfate (40%)
• Sulfuric Acid (98%)
• Urea Solution (50%), and
• Zinc Orthophosphate .Ozonated Water up to 10 PPM is also listed as compatible.Match your fitting and gasket materials to the specific chemical and concentratio