The Snyder Industries 4000 Gallon Vertical Storage Tank is a black crosslinked linear polyethylene (XLPE) vertical storage tank built to ASTM standards and rated to a 1.5 specific gravity, so it holds contents up to about 1.5 times the density of water without derating the shell. Its bounding footprint is 120 x 120 inches with an overall height of 104 inches - plan your pad, clearances, and overhead fill access around those numbers, and confirm the actual round tank diameter against the technical drawing on this page before you pour concrete.
What it holds and how much it weighs
Filled with plain water, this vertical tank carries roughly 33,360 pounds. The 1.5 SG rating means it can safely hold heavier-than-water solutions up to about 50,040 pounds of contents - that figure reflects denser fluid, not water getting heavier, and it is the number that sizes your foundation. An above-ground poly tank of this size needs a level, continuously supported pad; a partially supported base concentrates load and stresses the wall. Use the Tank Sizing Calculator and the Tank Sizing Guide to match this 4,000-gallon body to your draw-down and refill cycle, and the concrete pad sizing guide to size the slab beneath it.
Fittings and access
The tank is configured with a flange fitting, an 18-inch PE threaded and vented top opening, and a manway with 15-inch access for interior inspection and cleanout. Land your inlet, outlet, vent, and overflow through gasketed mechanical bulkhead fittings at these sanctioned ports rather than cutting fresh penetrations in the XLPE wall. Verify the exact fitting locations and elevations against the technical drawing on this page so your plumbing lines up on the first fit-up. If this storage tank feeds a fire-water reservoir or long-dwell system, the fire-water reservoir design guide covers the NFPA 22 sizing and cold-climate freeze protection that decide whether the stored volume is usable when you need it.
The mistake to avoid
Do not treat the black XLPE shell as a chemical tank by default. Crosslinked polyethylene cannot be seam-welded or field-modified like linear HDPE, so any added connection must be a gasketed mechanical fitting rated for the wall - never a welded bung. Confirm any non-water service against the OEM chemical-resistance chart, and account for freeboard on denser contents as covered in the ASTM D1998 freeboard guide.
This tank ships LTL freight from the Snyder plant in Chowchilla, California as a single handling unit, with the exact cost quoted live to your delivery ZIP. Because freight on a 4,000-gallon body is a large, ZIP-sensitive line item - West Coast and Southwest destinations quote materially lower than East Coast - run the Freight Cost Estimator before you commit, or call 866-418-1777 to confirm access, liftgate needs, and lead time. A clear, forklift- or crane-accessible delivery point keeps your freight straightforward.
