The Norwesco 300 Gallon Vertical Liquid Storage Tank (part #45876) is a natural-white polyethylene vertical storage tank standing 79 inches tall on a compact 35-inch diameter base. Rated to a 1.9 specific gravity, it holds 300 gallons of water - or denser liquids - while keeping a small floor area, which makes it a practical fit for tight equipment rooms, well houses, irrigation skids, and ag liquid storage where vertical height is available but floor space is limited.
Will this 300 gallon vertical tank work for your space?
The numbers tell the story. Full of water this tank carries roughly 2,502 pounds, and at its full 1.9 specific gravity rating it can hold up to 4,754 pounds of contents - so size your stand, pad, or floor slab to the heavier of those two figures based on what you plan to store. Lay out the pad around the 35-inch round footprint and allow clearance on all sides for lid access and the dome fittings, plus enough overhead room to clear the 79-inch height when you set and service it. To match capacity and dimensions to your refill cycle and the room you have, run the numbers through our Tank Sizing Calculator or read the Tank Sizing Guide. Need the same 300 gallons in a wider, shorter profile? Norwesco also makes a 46" x 50" version of this storage tank if floor space is plentiful but headroom is tight.
Why the 1.9 specific gravity rating is the reason to pick this tank
The standout spec here is the 1.9 specific gravity wall. Many water tanks are rated only to 1.0 to 1.5, so this heavy-duty build does double duty: it stores water and a wide range of heavier liquids up to a 1.9 specific gravity, not just plain water. That headroom is why buyers reach for this vertical tank over a lighter-rated alternative. The rule to follow is simple - match the tank to liquid weight, not just volume. The 4,754-pound rated contents weight is the ceiling; exceeding it stresses the polyethylene wall and the base, and you should never fill a tank designed for a lighter liquid with a heavier one. If you are storing anything denser than water, confirm your liquid's specific gravity stays at or below 1.9.
Fittings, handling, and setup
Confirm the fitting configuration against the technical drawing on this page before you plumb it - check the outlet and lid callouts there rather than assuming, so your connections match what is actually molded into this tank. On handling: empty, this is a manageable uncrate and position job, but once there is liquid in it the weight climbs fast, so set it in its final spot first and never move it with contents inside. For a deeper walkthrough of specs and setup, see our complete buyer's guide for this tank.
This vertical storage tank ships LTL freight from the nearest Norwesco plant in our network - Fairfield, TX - with the rate quoted live to your ZIP code. Because freight on a tank this size depends on your destination and delivery conditions, get an exact number with our Freight Cost Estimator before you order, or call us at 866-418-1777 and we will quote it for you. The listed price is for the tank before freight; LTL is quoted separately to your ZIP.
3 Year Warranty
