The Chem-Tainer 45 Gallon Plastic Vertical Liquid Storage Tank (SKU TC1851IC) is a compact polyethylene vertical built for liquid storage where floor space is tight. It stands on an 18-inch diameter (18 x 18 in footprint) and rises 51 inches tall, holding 45 gallons in a tall, narrow profile that tucks into corners, utility rooms, and equipment bays a wider tank can't reach. If you are searching for a small vertical storage tank or a vertical tank that stands up instead of spreading out, this is the size that fits the space.
Will it work for your liquid?
This tank carries a 1.5 specific gravity rating, which tells you how heavy a liquid it is engineered to hold. Specific gravity compares your liquid's weight to water: water is 1.0, so a 1.5 rating means the wall is built for liquids up to one and a half times the weight of water. You can check the math yourself with the pack numbers: 45 gallons of water runs about 375 pounds at 1.0 SG, and the same 45 gallons at the 1.5 ceiling works out to roughly 563 pounds of contents. That spread is why a small tank like this can carry denser liquids than water without being pushed past its rating. Match your liquid's specific gravity against the 1.5 ceiling before you fill, and if you are unsure how a 45-gallon vertical fits your total storage need, run the numbers with our Tank Sizing Calculator or read the Tank Sizing Guide.
Specs and fit
This is a Chem-Tainer vertical tank molded from polyethylene: 45 gallons, 18-inch diameter, 51 inches tall, on an 18.0 x 18.0 footprint. The tall, slim shape keeps the floor space small while building capacity vertically. The inlet, outlet, and port layout is shown on the technical drawing on this page, so confirm thread and port positions against your plumbing before ordering. Because this is a small-diameter vertical, set it on a flat, fully supported, level surface so the load stays centered over the base.
The mistake to avoid
The most common error with a small vertical tank is treating the specific gravity rating as optional. The 1.5 rating is the ceiling, not a suggestion: filling it with a liquid heavier than rated stresses the wall and shortens tank life. Confirm your liquid sits at or below 1.5 SG, and confirm the fitting positions on the drawing match where you need inlet and outlet connections. If your liquid runs heavier than 1.5 SG, call 866-418-1777 before ordering and we will point you to a higher-rated tank. A few minutes checking weight and ports up front saves a return and a re-order later.
This tank ships LTL freight from the nearest Chem-Tainer plant to you, either Bensenville, IL or Hanford, CA. Dual-coast fulfillment means a Midwest or East buyer routes from Illinois and a West buyer from California, which usually means a shorter LTL lane and a lower quote than a single-origin listing. Rates are quoted live to your ZIP, so get your exact number with the Freight Cost Estimator, or call 866-418-1777 and we will quote it for you. For help setting one up right, the Tank Sizing Guide and our coverage on concrete pad sizing for above-ground polyethylene tanks walk through the surface prep and placement.
