The Chem-Tainer 30 Gallon Rectangular Open Top Tank is a compact polyethylene vessel sized at a nominal 30 gallons for batch mixing, parts washing, small-scale rinse stations, and portable water handling where an open top makes filling, stirring, and cleanout straightforward. If you have been searching for a 30 gallon rectangular open top tank or a simple open tank that seats flat on a bench or cart, this is that tank: no lid to remove, full access to the interior, and a rectangular footprint that uses corner and wall space more efficiently than a round tank of the same volume.
Does it work for your job?
Filled to capacity with water, this tank carries roughly 250 pounds, so plan the surface under it accordingly. A full 30 gallons is heavier than most people expect once it is staged, and a flat, continuously supported base keeps the walls true and prevents flexing at the rim. If you are not sure whether 30 gallons is the right working volume for your process, run the numbers with our Tank Sizing Calculator or read the Tank Sizing Guide before you commit. This tank ships as a bare open-top vessel with no bottom bulkhead, so you will typically pair it with your own gravity draw or a portable pump; check the technical drawing on this page and confirm the tank clears the space you have in mind before you place it.
Where it fits in a water setup
Open top rectangular tanks like this one are the workhorses of small water and reuse setups. They stage well side by side for a multi-tank rinse or settling train, and the open geometry gives you unobstructed access for cleaning between batches. If you are thinking bigger picture about grey-water, rainwater, or condensate handling, our guide on industrial water reuse tank topology covers how storage trains are sequenced by water quality. For anything mounted on a slab, the concrete pad sizing framework walks through supporting an above-ground polyethylene tank.
The mistake to avoid
The most common misstep with an open top tank is treating it as a permanent pressurized or plumbed vessel. It is an open, vented design meant for atmospheric use only; do not seal it, pressurize it, or hang plumbing off the rim expecting the wall to carry the load. Keep the base fully and evenly supported, and account for that 250-pound loaded weight before you set it on a raised platform or a cart.
Quick reference: loaded weight roughly 250 lb at full water, ships from West Babylon, New York, LTL freight quoted live to your ZIP. This tank ships by LTL freight from the Chem-Tainer plant in West Babylon, New York, with the freight cost quoted separately to your ZIP code before you order. Get an exact number in seconds with our Freight Cost Estimator, or call 866-418-1777 and we will work up the quote and confirm lead time with you.
