The Snyder Industries 4400 Gallon HDPE Vertical Liquid Storage Tank is a 4,400-gallon white polyethylene vertical storage tank built to a 1.5 specific gravity rating, which gives you working capacity for water and heavier liquids without running the wall thickness to its limit. It stands 182 inches tall on a 90 x 90 inch square footprint, so plan your site, pad, and overhead clearance around those dimensions before it arrives. This is the tank to put on the page when someone searches for a Snyder vertical HDPE storage tank in this capacity and wants the specifications confirmed before they commit.
Will it work for your site?
The 1.5 specific gravity rating is the number to anchor on. Water weighs roughly 8.34 pounds per gallon, so a full tank of water carries about 36,696 pounds of liquid. Because the shell is rated to 1.5 SG, it is built to hold contents weighing up to about 55,044 pounds at full volume - that headroom is what lets you store liquids denser than water within the rated range. If you are storing anything denser than water (brine, certain fertilizers, fire-suppression additives within rating), this 1.5 SG shell is the spec to require, since a standard 1.0 to 1.35 SG tank in this capacity is not rated for that load. Those weights drive the engineering under the tank: a 90 x 90 inch footprint concentrating tens of thousands of pounds demands a properly sized, level pad. Our concrete pad sizing guide walks through the ACI 360R-10 framework and where the ACI 318 boundary applies, and the Tank Sizing Calculator and Tank Sizing Guide help you confirm 4,400 gallons is the right volume for your draw and refill cycle. Treat 4,400 gallons as nominal - usable volume is less once you account for fitting heights and required freeboard, so size your draw against working capacity, not the nameplate; the Snyder freeboard sizing guide covers the ASTM D1998 logic behind that.
Fittings and access
This tank carries a manway with a 15-inch access opening for entry and interior inspection, an 18-inch PE threaded and vented top fitting, a flange, two 3-inch S.U.M.O. fittings, a 12 x 14 inch fitting, and a flat fitting provision. Each S.U.M.O. and flange penetration seals with its own gasket and bolt set sized to that fitting, so order the matching gasket kit and outlet hardware to the fitting spec rather than a generic adapter. Match your plumbing, fill line, vent, and outlet hardware to those specific connections, and reference the technical drawing on this page for the exact fitting locations and orientations before you order valves or adapters. Rated for water and liquid storage service, the 15-inch manway access supports periodic interior inspection - schedule it at the vapor-headspace zone the wall-thickness guide flags. Confirming the fitting layout against your piping plan up front is the single most common way to avoid a costly rework after delivery.
Freight and ordering
This tank ships LTL freight from the Snyder plant in Lincoln, NE, and freight is quoted live to your ZIP code rather than included in the list price. At 182 inches tall this is an oversized load, so the destination matters: plan for a 90 x 90 inch pad and at least 182 inches of vertical clearance at the install point, and confirm your delivery path can accept a load 90 inches (7 feet 6 inches) wide. Use the Freight Cost Estimator to get a freight number to your ZIP, and have your delivery site ready for offload. One mistake to avoid is treating wall thickness as uniform - the wall is thinnest where the vapor-saturated headspace meets the shell, which is where HDPE tanks commonly begin to fail; our guide on HDPE wall thickness and ASTM D1998 sizing logic explains why liquid-side inspection misses it. For specifications, fitting confirmation, or freight quotes, call us at 866-418-1777.
