Snyder Industries 7500 Gallon HDPE Vertical Liquid Storage Tank with ASTM Certification

The tallest tank in the line, in the middle wall

A water-rated wall is for water and nothing heavier; the heaviest wall is for concentrated acid; a 1.5 wall is the middle, sized for brine, fertilizer solution and coagulant as delivered and every water application, with margin, and 2,450 pounds of resin is what that takes on a shell nineteen and a half feet tall. The certification is against ASTM D1998, and the way a tank meets it is 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. Full, it puts 93,825 pounds on a 102 inch circle at the rating, the most concentrated floor load Snyder makes: a full-contact engineered slab beneath the entire floor, per the concrete pad sizing guide, 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 tells you whether 7,500 gallons covers the draw, and the tank sizing guide covers days of supply.

Grades on the 102 x 234 inch tank, and the sizes beside it

The N45 is the certified 1.9 wall in this same shell, 550 pounds heavier, for ferric at strength and the heavy brines; the N40 and N42 are cross-linked polyethylene for oxidizers, the N42 the heavy wall, and the N46 another linear grade at this weight. The 5300700 tanks lay 7,000 and 7,650 gallons down on a 142 inch base at 122 inches, 112 inches lower, for a barn roof and a big pad, the N43 this same certified 1.5 wall.

Settled on the 7500 gallon tank? Freight to your ZIP and add to cart above; a written quote is one click away for the paperwork.

Fittings and access

• Access: 18 inch threaded, vented manway, 234 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 float switch at low level shuts the pump off before it runs dry. Mount the pump below the outlet so it primes by gravity, keep the manway 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.

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 the liquid does not free-fall and foam; on a shell this tall that is a long drop. 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 the log takes the date and strength of every load that follows.

Jobs it is bought for

Coagulant, brine and fertilizer solution delivered by tanker with a full reserve, at plants with height and no floor space that need the certification on file, well storage for a community system, a reserve inside a tall process building, 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.

What the carrier needs from you

At 102 inches across and 234 inches long on the deck the 7440000N43 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 sets 2,450 pounds upright on the slab; a forklift can unload it but not stand it. Water to the manway once, a hold, the outlet fitting checked, and the certification paperwork filed with the job. Note the pad height and the outlet height on the site plan while the tape is out; the next pipe run will need both.