Snyder Industries 9500 Gallon HDPE Vertical Liquid Storage Tank with ASTM Certification

Seventy-five tons of chemical on a ten foot circle

A 1.9 specific gravity wall is sized for a liquid nearly twice as dense as water, and 3,600 pounds of resin is what that takes on a shell eighteen feet tall, 800 pounds more than the lighter grades in the same mold. The certification is against ASTM D1998; 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, which is large for a dense chemical, is accounted for. Full, it puts 150,537 pounds on a 120 inch circle at the rating: a full-contact engineered slab beneath the entire floor, per the concrete pad sizing guide, inside a berm sized to the tank, with the empty tank strapped against wind at two heights and the manway reached from a fixed platform with a rail, never a ladder. The tank sizing calculator turns feed rate and delivery interval into a volume, and the tank sizing guide covers the reserve.

Grades on the 120 x 215 inch tank, and the sizes beside it

The N42 is the heavy cross-linked tank at this tank's weight for the densest oxidizers, and the N40 and N46 the lighter cross-linked and linear grades for liquids that never approach this density. The 7450000C26 is the general-grade shell at 9,800 gallons on the same base and height, and the 7400000C26 holds 8,900 gallons 21 inches lower.

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.

Connections

• Access: 18 inch threaded, vented manway, 215 inches up; fill down a dip tube, run the vent outside on acid and caustic, and size it for the unload rate.
• Outlet: tell us the chemical when ordering and the bulkhead fitting is matched to it; a flanged transition, an expansion joint, and a valve supported off the slab.
• Service limit: 120 F / 48 C.
• Listing: ASTM certification.

Match the level sender to the chemical and put the display at ground level; the manway stays shut so vapor stays in the tank, and a chemical that sunlight degrades gets a shade or a roof. A single wall tank of a regulated liquid lives inside a berm that holds the whole tank. Where it freezes, insulate or drain the outlet valve and the first length of pipe.

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 caustic or coagulant does not free-fall and foam; on a shell this tall that is a long drop. Never add water to the chemical; add the chemical to the water, because the dilution heat is real. Somebody stands at the tank for the whole of the first delivery, watching the slab edge and the outlet fitting as the level rises, and every delivery after that goes in the log with a date and a strength.

What it holds in practice

Ferric and other dense coagulants at a large plant with a berm, acid feed for pH control at scale, heavy brine at plant scale, dense process chemicals delivered two tankers at a time, and water where the buyer wants the heaviest certified wall for a long life outdoors, including a fire reserve of the kind the fire-water reservoir design guide describes. Never two chemicals in one tank, and one label that satisfies both inspectors.

Getting it to the pad

At 120 inches across and 215 inches long on the deck the 7450000N45 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 crane sets 3,600 pounds upright on the slab; unloading is a forklift job, standing it is not. Test it on water first, to the manway, held, then drained and dried before any chemical is connected; file the certification with the job. Once it is full and holding, leave it alone for a day before the plumbing goes on; a settled tank is a quiet one.