The Snyder Industries 360 Gallon ASTM Black Heavy Duty Vertical Storage Tank is a 360-gallon polyethylene vertical storage tank built in Snyder's ASTM-series construction. It stands 59 inches tall on a 53-inch diameter round footprint, so it fits a compact pad while holding a serious volume of water or other liquid. Rated to a 1.9 specific gravity, it carries denser contents than a standard water tank without derating, which is what earns it the heavy-duty designation. If you are cross-shopping a vertical storage tank, a black tank, or a Snyder black tank for bulk water, this is the workhorse size.
Will it work for your site
Sizing starts with weight. Filled with water, this tank carries about 3,002 pounds of contents, and it is rated to hold up to 5,705 pounds at its full 1.9 SG capacity. Plan your pad and anchoring around the loaded weight, not the empty shell. The 53-inch diameter base keeps the footprint tight, but a level, full-bearing concrete or compacted pad under the entire bottom is non-negotiable for a tank this heavy; our concrete pad sizing guide walks the ACI 360R-10 framework. To confirm this 360-gallon size against your daily demand or reserve target, run the Tank Sizing Calculator or read the Tank Sizing Guide. For use-case planning, this size is a common fit for a rural fire-water reservoir or a node in an industrial water-reuse train for grey-water, rainwater, or condensate aggregation.
Fittings and access
Per the technical drawing on this page, this tank is configured with a flange fitting, an 18-inch PE threaded and vented cap, and a manway with 15-inch access. The flange is your plumbed connection point for inlet or outlet routing, and it seals with a gasketed bulkhead assembly; the pack does not specify a gasket part, so confirm the gasket material and bolt pattern against the drawing before you order fittings. The vented 18-inch cap matters too: a tank filling or draining fast needs to breathe, and the factory vent prevents the vacuum or pressure that can deform a poly wall. The 15-inch manway gives you interior reach for cleaning, inspection, or dropping in level instrumentation. Verify exact port sizes and locations against the drawing before you plumb.
The mistake to avoid
Do not undersize the pad or skip anchoring because the empty tank moves easily. This is a 1.9 SG-rated vessel, and at capacity it puts more than 5,700 pounds on a 53-inch circle. The other common miss is bypassing the vent when tying in a pump: plumbing over the 18-inch vented cap can pull the walls in on a hard draw, so keep the vent path open.
This tank ships LTL freight from Snyder's plant in Marked Tree, Arkansas, with freight quoted live to your ZIP, so you can gauge the lane distance before you quote. Get a number in seconds with our Freight Cost Estimator, or call 866-418-1777 to confirm lead time and place your order. Listed before freight, this is one of the strongest values in the 360-gallon heavy-duty vertical class for water and dense-liquid service.
