Snyder Industries 6000 Gallon Plastic Vertical Liquid Storage Tank

The heavier 6,000 on the small pad

Two hundred pounds of extra resin on the same mold is wall thickness, and wall thickness is what a polyethylene tank ages on: the headspace above the liquid is where a wall fails first, and a thicker one takes longer to get there. Rotationally molded polyethylene tanks are sized to ASTM D1998, and the sheet rates this wall for liquids nearly twice as dense as water, so brine and coagulant are covered as well as water. The 3 inch fitting is the outlet a fire pump or a transfer pump wants, already in the wall. Full, it puts 95,076 pounds on a 102 inch circle at the rating: a designed slab that touches every inch of the floor, following 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. The 6,000 gallon vertical tank buyers guide sets the makers' shapes at this volume side by side; the tank sizing calculator tells you whether 6,000 gallons covers the draw, and the tank sizing guide covers days of supply.

The 102 x 188 inch tanks, and the sizes beside them

The 7430000C26 is the same shell and fitting in the lighter wall, and the WV90 is the water tank in this shell with a 2 inch outlet. The 7000000 tanks and the 7140300N40 stand the same 6,000 gallons on a 120 inch base at 132 and 145 inches for a site with floor and less height, the 5250000N40 lays 5,600 gallons of cross-linked resin down on a 142 inch base, and the 8220000C34 holds 6,200 on the ten foot base.

Which wall for your chemical? Call 866-418-1777 with the name and the concentration and we will pick the row.

Top and bottom connections

• 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.
• Access: 18 inch threaded, vented manway, 188 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. On a tank this tall nobody reads a level by eye; fit a sender read at ground level, and a float switch for low level protects a pump. 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.

Tanker day

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 the liquid does not free-fall and foam; on a shell this tall that is a long drop. 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.

Duty it is sized for

Well storage for a community system that wants the heavier wall outdoors, coagulant and brine delivered by tanker with a reserve, 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 feeds the pump. 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.

Landing it on the pad

At 102 inches across and 188 inches long on the deck the 7430000C37 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 1,650 pounds upright on the slab; unloading is a forklift job, standing it is not. Fill it to the manway once, hold it, and check the fitting for a weep before the pump goes on. Walk the base after the first hard rain; a pad that shifts shows it at the edge first.