Snyder Industries 10500 Gallon Plastic Vertical Liquid Storage Tank

Two tankers in the heavier shell

A water-rated wall is for water and nothing heavier; the chemical-grade 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 this shell carries 2,500 pounds of resin, 250 more than the lighter general grades in the same mold. Rotationally molded polyethylene tanks are sized to ASTM D1998, and the way a tank meets the density it is rated for is in the wall. The floor is the widest in the line, so the pad matters more than the height: 131,355 pounds on a 142 inch circle at the rating needs a designed slab that touches every inch of the floor, following 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 and the manway reached from a short platform. The 10,500 gallon vertical tank buyers guide sets the makers' shapes at this volume side by side; the tank sizing calculator tells you whether 10,500 gallons covers the draw, and the tank sizing guide covers days of supply.

Grades on the 142 x 169 inch tank, and the sizes beside it

The N40 is the cross-linked tank at this weight for oxidizers and the N29 another 2,500 pound grade; the C26, C34 and C37-BLACK are the lighter general grades, the C26 with the same 3 inch fitting and the C37-BLACK in black for sun. The 32074 and 32026 are the water tanks on this base, 12,000 gallons 28 inches taller and 10,000 gallons 2 inches lower.

Other makers in the running? 866-418-1777 will compare them honestly; Norwesco, Snyder, Chem-Tainer, Enduraplas and Bushman are all here, or price freight on this one.

Openings as shipped

• Outlet: 3 inch polypropylene female NPT bulkhead fitting, installed; thread in a valve, run a flexible connector and an expansion joint to hard pipe, and support the valve off the slab. Three inches feeds a fire pump or a transfer pump without starving it.
• Access: 18 inch threaded, vented manway, 169 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.
• Service limit: 120 F / 48 C.

Polypropylene is the fitting for water, brine and most treatment chemicals; check the liquid at its concentration against the fitting as well as the wall before the first fill. The white wall shows the level in daylight; fit a sender read at ground level so nobody climbs for a number, and fit a low-level float switch so a pump never runs dry. Keep the manway closed against vapor loss, and keep the tank out of direct sun where the liquid is light-sensitive. In a freezing climate insulate or drain the outlet valve and the first run of pipe; the body takes ice from the top down without harm.

Unloading without a spill

The truck's pump outruns the manway vent, so size the vent for the unload rate or give the fill its own top bulkhead and vent line. The fill pipe reaches the floor, so the liquid enters below the surface instead of free-falling and foaming. The first tanker into a new tank is a supervised job, slab edge and outlet fitting checked as it fills, and from then on each load is logged by date and strength.

In service

Coagulant, brine and fertilizer solution delivered two tankers at a time into a barn or a shed, well storage for a community system under a low roof, a rain cistern under a large roof, and a fire reserve of the kind the fire-water reservoir design guide describes, where the 3 inch outlet and the low center of gravity both count. Several of them are the storage stage of a reuse system for roof water and condensate, per the industrial water reuse tank topology article. One liquid per tank, labeled.

Freight and unloading

At 142 inches across the 5330000C37 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 prices the move to your ZIP, and the price on this page is before freight. A crane or a forklift with long forks sets 2,500 pounds on the slab, and the slab is checked flat before the tank lands. Fill it to the manway once, hold it, and check the fitting for a weep before the pump goes on. The first fill is the only cheap time to find a problem, so do it in daylight with someone watching the base.