Long ago, the wooden barrel or cask was replaced by stainless steel or aluminum kegs for proper storage and transportation of fine beers. Workmanship standards and materials invested into these pieces has significantly improved over decades, and has had a measurable impact on their durability, food safety and final product quality. While many manufacturers choose more cost effective aluminum produ
cts, high-grade stainless steel is known to produce a more durable keg with an advanced life span. Stainless steel is formed and welded – either by hand or machine – to create its cylindrical shape, commonly associated with beer kegs. Beer kegs typically feature an opening at one end for a tap, and inside a tube made of metal called a spear, allowing beer to easily flow from the keg and through the tap. This process is assisted by the use of gas, usually carbon dioxide, which propels the liquid upwards and out of the spear. The flow of beer and gas is controlled with the use of valves on the top of the beer keg. One of the most critical aspects of beer kegs is its functionality – the ability to properly maintain the product that will be stored within it – so it is important to use the best possible materials in the construction process. Utilizing high quality beer kegs and valve systems means that beer can be stored for as long as 4 months without affecting the taste or attributes of the product – a good investment for any brewer.
