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

Fifty-two tons of water on a twelve foot circle

Full of water, the 5350000N43 puts 104,250 pounds on a 142 inch circle, and a rotationally molded floor bears on the whole pad, so the pad is what matters: an engineered slab in full contact under the entire floor, per the concrete pad sizing guide, screeded flat, with no pipe trench or drain crossing under it. Strap it before it is filled, because 198 inches of empty polyethylene is a sail, and the straps go slack once it is full. 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. The tank sizing calculator tells you whether 12,500 gallons covers the draw, and the tank sizing guide covers days of supply.

Grades on the 142 x 198 inch tank, and the sizes beside it

The N45 is the certified 1.9 wall, 1,100 pounds heavier, for ferric at strength and the heavy brines. The N40 is cross-linked polyethylene for oxidizers, and the C34 and C37-BLACK are the general-grade tanks in white and black, all at this tank's weight. The 32074 is the lighter 12,000 gallon water tank at nearly this height, and the 3030100C26 holds 15,000 gallons on a 165 inch base 14 inches shorter.

Still deciding between these? Freight to your ZIP often settles it; the wider tanks ship differently. Or call 866-418-1777 and we will walk the table with you.

Access and outlet

• Outlet: name the liquid when ordering so the bulkhead fitting matches it; a flexible connector between the bulkhead and hard pipe, an expansion joint, and the valve supported off the slab. For a fire reserve a large outlet is specified at order.
• Access: 18 inch threaded, vented manway, 198 inches up, reached from a fixed platform with a rail.
• Service limit: 120 F / 48 C.
• Listing: ASTM certification.

A tank this size moves a great deal of air as it fills, empties and warms in the sun, so the vent is sized for the pump-out rate and the fill rate, not left at the manway default, and it is screened. Fit a sender read at ground level so nobody climbs for a number. If winters freeze, wrap or drain the outlet valve and the first pipe run; at this volume the body freezes slowly and from the top down.

Put to use

Community and municipal water storage where the certification has to be on file, a fire reserve of the kind the fire-water reservoir design guide describes, irrigation storage on a large property, and brine, fertilizer solution or coagulant as delivered at the 1.5 rating. One liquid per tank, labeled.

How it ships

At 142 inches across and 198 inches long on the deck the 5350000N43 is oversize freight (NMFC 156600) on a flatbed at a lane rate, with an escort on most routes; the freight cost estimator prices the move to your ZIP, and the price on this page is before freight. A crane sets 3,100 pounds upright on the slab. Fill it to the manway once, hold it, check the outlet fitting, and keep the certification paperwork with the project file. A strap that is checked once a season is a strap that holds; put it on the same calendar as the gutters.