Chem-Tainer 70 Gallon Plastic Portable Utility Tank

The Chem-Tainer 70 Gallon Plastic Portable Utility Tank is a flat-bottom polyethylene tank built for moving and storing water and water-based liquids where a low, stable footprint matters more than vertical height.At 18" tall, 26" wide, and 42" long, it sits low enough to fit in a truck bed, on a trailer, or under a low overhang while still holding a working 70 gallons.If you have been searching for a utility tank, a Chem-Tainer utility tank, or a 70 gallon utility tank you can actually transport without a crane, this is the size class that solves it.

Will it work for your job?

The footprint is 26.0 x 42.0 inches, so plan a flat, fully supported surface that covers the entire base.Flat-bottom utility tanks rely on continuous support underneath them: never let the tank overhang a pallet edge, a tailgate gap, or an unsupported deck section.Filled with water at a specific gravity of 1.5, a full 70-gallon load weighs about 584 lb, and the tank carries a maximum rated contents weight of 876 lb.Size it to your real gallons-per-trip or gallons-per-day demand using our Tank Sizing Calculator or the Tank Sizing Guide before you commit to a footprint this large.

Specific gravity: the mistake to avoid

This tank is rated to a specific gravity of 1.5, meaning the polyethylene wall is built to carry liquids up to 1.5 times the density of water.Read that as a weight limit, not a chemical clearance.Here is the number that trips people up: the 876 lb maximum rated contents figure is exactly a full 70-gallon fill at 1.5 SG (584 lb x 1.5).That means at the top of the density rating you are at the ceiling with no spare margin.For static storage that is fine, but a portable tank lives on rough roads, where sloshing and road shock multiply the static load.If you are hauling a heavy, near-1.5-SG liquid, derate below a full fill, secure the tank against shifting, and treat 1.5 SG as the hard density boundary it is.The flip side is the good news: this model is already built for liquids up to 1.5x water density, the top portable-utility density tier, so there is no need to step up to a heavier-rated tank for dense water-based loads.

Fittings, drawing, and configuration

Portable utility tanks are ordered in different fitting layouts, so do not assume a standard outlet position.For exact bulkhead, fitting, and outlet placement on this specific model, see the technical drawing on this page before you plumb anything, and call 866-418-1777 to confirm fitting size, gasket material, and outlet location against your pump or manifold setup before you order.If you are designing this into a larger water system, our engineering guides go deeper: fire-water reservoir tank design for rural sites, concrete pad sizing for above-ground polyethylene tanks, and industrial water reuse tank topology.

This tank ships LTL freight from the nearest Chem-Tainer plant in our network, either Marked Tree, AR or Merced, CA.Which plant ships it, and therefore your LTL cost, depends on your ZIP, which is exactly why a live quote matters before you buy.Get your real carrier number now with the Freight Cost Estimator, or call 866-418-1777 and we will help you confirm fittings, freight, and lead time for your delivery.