Chem-Tainer 150 Gallon PE Rectangular Open Top Tank

The Chem-Tainer 150 Gallon PE Rectangular Open Top Tank is a straight-sided polyethylene container built for water storage and batch handling where you need access from above. The open top lets you fill, dip, agitate, or hand-clean without working through a narrow lid, and the rectangular footprint stores more usable volume against a wall or inside a truck bed than a round tank of the same floor space. Here is what you need to know before you buy this 150 gallon open tank.

Will this rectangular open top tank work for your job?

This is a 150 gallon rectangular open top tank molded from polyethylene by Chem-Tainer, sized for water service. Filled to its rated capacity, it carries roughly 1,251 lb of water, so size your stand, pad, or platform for that full water weight, not the empty tank weight. Because the top is open, the rated volume assumes a safe freeboard line, leave headroom so liquid does not slosh over during transport or agitation. This is a gravity, atmospheric-pressure vessel rated for water (specific gravity 1.0); for any liquid heavier than water, call 866-418-1777 first so we can confirm a suitable variant rather than assuming this unit covers it. If you are unsure whether 150 gallons matches your draw-down or batch size, run the numbers with our Tank Sizing Calculator or read the Tank Sizing Guide. For exact outside dimensions and wall layout, see the technical drawing on this page.

What to check before you order

The most common mistake with an open top tank is treating it like a closed, pressure-rated vessel. It is not, so do not seal it, pressurize it, or use it as a load-bearing surface. This tank also ships with no factory-installed fittings or gaskets listed, any bulkhead or sidewall drain, plus its gasket, is a separate item you spec to the tank, so call 866-418-1777 to add the right fitting and gasket. Before you cut, confirm placement against the technical drawing, the flat panels and the 1,251 lb rated water weight determine where a fitting can safely go. For above-ground installs, set the tank on a smooth, fully supporting base; our guide on concrete pad sizing for above-ground polyethylene tanks walks through a pad that carries the full load without flexing the floor.

Common uses and freight

A 150 gallon open-top water tank suits batch mixing, wash-down reservoirs, and rural or remote emergency-water reserves; our write-up on fire-water reservoir tank design and NFPA-22 sizing covers how polyethylene tanks fit a private fire-protection or stored-water plan, and our industrial water reuse tank topology guide shows where rectangular open top tanks fit into grey-water, rainwater, and condensate trains. This Chem-Tainer tank ships LTL freight from West Babylon, New York, with freight quoted live to your ZIP code, never bundled into the list price. Get an exact number with our Freight Cost Estimator, or call 866-418-1777 and we will quote freight, confirm lead time, and help you spec fit, fittings, and base the first time.