Snyder Industries 12500 Gallon HDPE Vertical Liquid Storage Tank with ASTM Certification

Two tankers and a reserve, certified, at the lightest certified wall

A 1.35 specific gravity rating is the step between the water wall and the middle grade: alum and most fertilizer solutions come in lighter than that, so this tank carries them with margin at less resin than the heavier grades. ASTM D1998 is the standard the certification is written to, and a tank meets it in the wall; the HDPE tank wall thickness guide explains the sizing logic and why a wall this tall is inspected from the top, in the headspace, and the freeboard sizing guide works out the usable volume once thermal expansion is accounted for. The floor is one of the widest in the line, so the pad matters as much as the height: 145,950 pounds on a 142 inch circle at the rating needs an engineered slab bearing under the entire floor, sized by the concrete pad sizing guide, because a tank this wide spans any hollow in a gravel base and cracks there when full; the empty tank is strapped against wind at two heights and the lid reached from a fixed platform with a rail. The tank sizing calculator tells you whether 12,500 gallons covers the draw, and the tank sizing guide covers days of supply.

The certified 12,000 to 15,000 gallon tanks

The 5350000N33 is the black tank in this shell for sun and light-sensitive liquids, listed at 12,000 gallons. The 3030100 tanks hold 13,800 gallons on a 165 inch base 14 inches lower, for a site with more floor and less height, in the same three certified walls, the N39 at this rating in a lighter shell.

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.

Access and outlet

• Access: 18 inch lid, 198 inches up; filled by truck through a dip tube, vented outside on anything that fumes, and size the vent for a tanker's unload rate.
• Outlet: tell us the liquid when ordering and the bulkhead fitting is matched to it; a flexible connector between the bulkhead and hard pipe, an expansion joint, and the valve supported off the slab.
• Service limit: 120 F / 48 C.
• Listing: ASTM certification.

On a tank this tall nobody reads a level by eye; fit a sender read at ground level, and a low-level switch protects the pump. Mount the pump below the outlet so it primes by gravity, keep the lid closed against vapor loss, and keep the tank out of direct sun where the liquid is light-sensitive. Where it freezes, insulate or drain the outlet valve and the first length of pipe; the body takes ice from the top down without harm.

Fill day

The driver's pump can deliver faster than the lid 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 the liquid does not free-fall and foam; on a shell this tall that is a long drop. Watch the first delivery from the first gallon to the last, checking the slab edge and the outlet fitting as the level rises, and the log takes the date and strength of every load that follows.

Put to use

Alum and fertilizer solution delivered two tankers at a time at plants and farms that need the certification on file, well storage for a community system, a rain cistern under a very large roof, and a fire reserve of the kind the fire-water reservoir design guide describes, where the height gives a pump a flooded suction. One liquid per tank, labeled.

Truck, crane and the first hour

At 142 inches across and 198 inches long on the deck the 5350000N39 is oversize freight (NMFC 156600) on a flatbed at a lane rate, wider than most loads on the road, so the estimator's lane matters; the freight cost estimator quotes the haul to your ZIP; what is listed is the price before freight. A crane sets 3,100 pounds upright on the slab; this is not a forklift job. Fill it to the lid once, hold it, check the outlet fitting, and keep the certification paperwork with the project file. Write the fill date on the manway with a paint marker; it answers the first question anyone asks about a tank.