Snyder Industries 13800 Gallon HDPE Vertical Liquid Storage Tank with ASTM Certification

A hundred and nine tons of chemical, low to the ground

A 1.9 specific gravity wall is sized for a liquid nearly twice as dense as water, and 3,350 pounds of resin is what that takes on the widest shell Snyder makes, 250 pounds more than the 1.5 wall in the same mold. The tank is designed to ASTM D1998; the HDPE tank wall thickness guide explains the sizing logic and why the headspace is where a wall ages, and the freeboard sizing guide works out the usable volume once thermal expansion, which is large for a dense chemical, is accounted for. The shape is the low one: 218,675 pounds on a 165 inch circle sits close to the ground and needs the least strapping in the line, but the widest floor spans any hollow in a gravel base and cracks there when full, so the pad is an engineered slab in full contact under the whole circle, per the concrete pad sizing guide, inside a berm sized to the tank. The tank sizing calculator sizes the tank from feed rate and delivery interval; the tank sizing guide covers the reserve.

Grades on the 165 x 184 inch tank, and the sizes beside it

The N39 and N43 are the 1.35 and 1.5 walls in this same shell, 550 and 250 pounds lighter, for alum, coagulants and brines that never approach this density. The 5370000N39 stands 15,000 gallons on a 143 inch base at 234 inches for a site with height and less floor, and the 5350000N39 holds 12,500 on a 142 inch base 14 inches taller.

Comparing against another maker? Send the competing spec to 866-418-1777 and we will show the differences honestly.

Top and bottom connections

• Access: 24 inch lid, 184 inches up, wide enough to enter for cleaning; a dip tube for the fill, an outdoor vent on acid and caustic, and vent capacity to match the tanker.
• Outlet: order the bulkhead fitting in the material the chemical calls for; a flanged transition, an expansion joint, and a valve supported off the slab.
• Service limit: 120 F / 48 C.
• Snyder line: ASTM.

Read the level from the ground through a sender chosen for the chemical, not by climbing; keep the lid closed against vapor loss, and shade the tank where the chemical is light-sensitive. A single wall tank of regulated chemical stands inside a berm sized to it, and a berm around a fourteen foot tank takes floor, so plan it with the pad. In a cold climate the outlet valve and the first run of pipe are insulated or drained.

Tanker day

The driver's pump can deliver faster than the lid 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. Run the fill pipe to the floor so caustic or coagulant does not free-fall and foam. Diluting a dense chemical makes heat, so a batch is built water first and chemical second, never the reverse. The first load into a new tank gets watched end to end, eyes on the slab edge and the outlet fitting while the level comes up, and from then on each load is logged by date and strength.

Duty it is sized for

Ferric and other dense coagulants at a large plant with a berm and floor to spare, acid feed for pH control at scale, heavy brine at plant scale, dense process chemicals two tankers at a time, and water where the buyer wants the heaviest wall and the lowest center of gravity, including a fire reserve of the kind the fire-water reservoir design guide describes. One chemical, one tank, one label that both inspectors read the same way.

Landing it on the pad

At 165 inches across the 3030100N45 is oversize freight (NMFC 156600) on a flatbed at a lane rate, wide enough to need an escort on some routes, so the estimator's lane matters; the freight cost estimator prices the lane to your ZIP; the figure listed here is before freight. A crane sets 3,350 pounds on the slab, and the slab is checked flat before the tank lands. Water-fill it once to the lid, hold it, then drain and dry before the chemical connection is made. Save the pallet; a tank that ever has to move again is easier to move on it.