The weight of just the container itself can for many practical purposes be considered negligible compared to the weight of the liquid it holds.

On some designs, the tap is supposed to be replaced with a cap for storage or transport.Ī table of some common water canister thread types is shown below: TypeĢ in (51 mm) BSP / R2' steel drum fine thread A tap can either be an integrated part of the container (for example protected by a ridge) or an accessory. Some common thread diameters on European water canisters are 40 mm, 45 mm, 50 mm and 60 mm. Threads for caps and taps are standardized to some degree, with many European designs being based on various DIN standard sizes. ( March 2020) ( Learn how and when to remove this template message) Unsourced material may be challenged and removed. Please help improve this article by adding citations to reliable sources. This section needs additional citations for verification. Large water canisters may require a bung wrench to be opened (similar to barrels). Some canisters have air vents which can be opened to avoid sloshing while emptying the container. Water canisters are usually made out of plastic, for instance polyethylene or high-density polyethylene, while caps and taps often are made of polypropylene or polyethylene. Some canisters are marked with several lines (for example in liters) to indicate the current amount of liquid, but there are also canisters without any level markings. Water canisters often have a carrying handle for easier carry. There are also designs which are collapsible and can be folded when not filled with a liquid. Stackable water container typically have thicker walls to handle the added weight of being stacked on top of each other. Some canisters are for example designed to easily and sturdily be stacked on top of each other.

There are no common standardized shapes or sizes. Water canisters are made in many different sizes, with some of the most common volumes for household use being for example 5 L, 10 L, 20 L or 25 L. Illustration of the hippo water roller (bottom), a barrel-shaped container designed to be rolled along the ground, as opposed to carried.

Hidden water containers