The Snyder Industries 300 Gallon HDPE Vertical Liquid Storage Tank is a vertical storage tank standing roughly 79-80" tall on a compact 35" x 35" footprint, molded in white polyethylene by Snyder Industries and stamped to ASTM standards. It carries a 1.9 specific gravity rating, and that is the spec that decides whether this is the right tank for you: the wall is built to hold liquids up to 1.9 times the density of water. If you are storing brine, liquid fertilizer, or any solution heavier than water, this is the correct rating. If you only need plain water or rainwater, a standard 1.5 SG water tank would carry the load and this 1.9 SG wall is more tank than you need - choose deliberately rather than by default.
Will it work for your application?
Full of water, a 300-gallon fill weighs about 2,502 lbs, and the tank is rated to carry contents up to 4,754 lbs - that headroom is exactly what the 1.9 SG rating buys you. Plan the pad and any stand for the loaded weight, not the empty shell. Top-side access and plumbing are handled by a manway with a 15" access opening, an 18" PE threaded-vented fitting, a flange, a 6.5" x 6.5" flat fitting pad, and additional fitting flats for outlets and bulkhead penetrations - see the technical drawing on this page for exact placements. Gallonage marks may be removed for fitting placement, so confirm your tap heights against the drawing before you drill. If you are still settling on capacity, run the numbers through the Tank Sizing Calculator or read the Tank Sizing Guide.
Fittings and configuration
The 18" PE threaded-vented fitting is not optional hardware on an atmospheric vertical tank - it lets the tank breathe as it fills and draws down. If you cap or seal that vent, the tank can collapse on drawdown, so keep the vented path open or replace it with an equivalent vent. The flat fitting pads give you clean, level surfaces for bulkhead fittings instead of forcing penetrations onto a curved sidewall; they are sized to take a bulkhead fitting with gasket and locknut, so confirm your bulkhead size and gasket material against your stored liquid before ordering. For more on how wall thickness and the ASTM D1998 sizing logic protect a vertical tank across its service life, the guide on HDPE tank wall thickness at the vapor-saturated headspace is worth the read.
Sizing and freight
This 300 gallon vertical storage tank is a workhorse for water storage, rainwater capture, fire-water reserve, and general liquid handling on a small footprint. If a fire-protection reserve is your use case, the fire-water reservoir design guide covers NFPA 22 sizing discipline, and our complete buyer's guide walks the full spec set. The most common mistake on a tank this size is under-building the base: at over 4,700 lbs fully loaded with a dense liquid, a level, fully-supported pad is not optional.
This HDPE vertical tank ships LTL by freight from Snyder Industries in Marked Tree, Arkansas. Because it leaves a single plant in Arkansas, delivered freight to the West Coast or Northeast will run materially higher than regional Midwest and South delivery, so quote your exact ZIP before you compare total cost. Get an instant number with the Freight Cost Estimator or call us at 866-418-1777. Listed before freight; we quote your delivery to your exact ZIP.
