18,800 gallons at 1.9 specific gravity, ASTM certified
The Snyder 3030000N45 is a white polyethylene vertical liquid storage tank, 165 inches across and 242 inches tall, holding 18,800 gallons at 5,500 pounds. Its wall is rated for a specific gravity of 1.9, or 297,905 pounds of contents against 156,792 for water, the heaviest certified wall in Snyder's largest shell, for ferric chloride at strength, concentrated acids and the heavy brines at nearly four tanker loads. A 24 inch manway wide enough to enter for cleaning, a 3 year warranty, and it ships as oversize freight on a permitted load.
Is this the right 18800 gallon tank? Call 866-418-1777 with the liquid, the site and the ceiling height, or get freight to your ZIP and add it to your cart above.
The full-density wall at the top of the line
A 1.9 specific gravity wall is sized for a liquid nearly twice as dense as water, and 5,500 pounds of resin is what that takes at 18,800 gallons, 500 pounds more than the certified 1.5 wall in this same shell. The certification is against ASTM D1998; 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, which is large for a dense chemical, is accounted for. Full, it puts 297,905 pounds on a 165 inch circle at the rating: a slab engineered for it and in full contact under the whole floor, per the concrete pad sizing guide, screeded flat, inside a berm sized to the tank, with the empty tank strapped against wind and the manway reached from a fixed platform on its own footings. The tank sizing calculator works the volume out from feed rate and delivery interval, and the tank sizing guide covers the reserve.
Grades on the 165 x 242 inch tank, and the sizes beside it
| Part | Gallons | Diameter x height | Empty weight |
|---|---|---|---|
| 3030000N45 (this tank, 1.9 SG, ASTM certified) | 18,800 | 165 x 242 in | 5,500 lb |
| 3030000N43 (1.5 SG, ASTM certified) | 18,800 | 165 x 242 in | 5,000 lb |
| 3030000N39 (1.35 SG) | 18,800 | 165 x 242 in | 5,000 lb |
| 3030000N49 (black) | 18,800 | 165 x 242 in | 5,500 lb |
| 3030000C37-BLACK | 20,000 | 165 x 242 in | 5,000 lb |
| 5380000C126 (narrow, light wall) | 16,500 | 142 x 257 in | 3,000 lb |
The N43 and N39 are the 1.5 and 1.35 walls in this same shell for coagulants and brines that never approach this density; the N49 is the black tank for water in the sun at this tank's weight, and the C37-BLACK is this same shell rated for 20,000 gallons in the general grade. The 5380000C126 holds 16,500 gallons on a 142 inch base 15 inches taller in a light wall.
Comparing across brands too? Call 866-418-1777; we carry Norwesco, Snyder, Chem-Tainer, Enduraplas and Bushman and will say which one fits, or price the freight first.
Bulkheads and lid
- Access: 24 inch threaded, vented manway, 242 inches up; fill down a dip tube, run the vent outside on acid and caustic, and size it for the unload rate.
- Outlet: name the chemical when ordering so the bulkhead fitting matches it; a flanged transition, an expansion joint, and a valve supported off the slab.
- Service limit: 120 F / 48 C.
- Listing: ASTM certification.
Choose the level sender for the chemical and read it at ground level so nobody climbs for a number; keep the manway 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 at this volume the berm is the size of a building. Insulate or drain the outlet valve and the first run of pipe wherever the ground freezes.
The tanker unload
A tanker's pump moves liquid faster than a manway vent can pass air, so either the vent is sized to the unload rate or the fill comes in through its own top bulkhead with a separate vent line. Run the fill pipe to the floor so the liquid does not free-fall and foam. Dense liquids heat up when diluted, so a tank topped off with water for a batch is filled water first, chemical second, never the other way. The first delivery into a new tank is watched from start to finish, with the slab edge and the outlet fitting checked as the level climbs, and every delivery after that goes in the log with a date and a strength; at this size the delivery log doubles as the inventory.
Day-to-day duty
Ferric and other dense coagulants at a large plant with a berm, heavy brine at plant scale, dense process chemicals delivered by tanker, and water where the buyer wants the heaviest certified wall for a long life outdoors, including a fire reserve of the kind the fire-water reservoir design guide describes. One liquid per tank, labeled.
From the plant to your site
At 165 inches across and 242 inches long on the deck the 3030000N45 is a permitted oversize load (NMFC 156600) on a flatbed with escorts; the freight cost estimator prices the lane to your ZIP, and the listed price is before freight. A crane sets 5,500 pounds upright on the slab. Water-fill it once to the manway, hold it, check the outlet fitting, and keep the certification paperwork with the project file. Write the fill date on the manway with a paint marker; it answers the first question anyone asks about a tank.
Freight and documents
Ships from: Washington Court House, OH. LTL freight is quoted to your ZIP with the freight cost estimator or by phone at 866-418-1777. The listed price is before freight.
Technical drawing (PDF) for Snyder Industries 3030000N45.
See this tank
Interactive 3D model with live fill. This tank has an interactive 3D model built to its manufacturer dimensions. Rotate it, and set a fill level to see how much liquid it holds at any height. Open the 3D view on the product photo above. Download the 3D model (GLB).
Ready to order?
Add it to your cart at the top of this page, get LTL freight to your ZIP, request a written quote, or call 866-418-1777. The listed price is before freight.
