variable capacity tanks are also called floating lid tanks, VC tanks or variable volume tanks, The floating lid of a floating roof storage tank is a floating top cover that floats on the surface of the storage liquid. It floats up and down with the input and output of the storage liquid. There is an annular space between the floating roof and the tank wall, which has a sealing device to isolate the liquid in the tank from the atmosphere when it floats up and down on the top cover, greatly reducing the loss of the storage liquid during storage; The variable capacity tanks also need to be designed with lifting handle and air pump. The tanks are also fitting with thicker wall cause the tanks with low pressure Normally the floating lid is stainless steel 316 material and and air-tight seal.

Our variable volume wine tank is a professional winemaking equipment designed for flexible wine production. Adopting high-quality food-grade stainless steel, it features an adjustable floating lid to match different wine volumes, effectively reducing oxygen contact and preventing wine oxidation. It’s widely used for wine fermentation and storage, perfectly meeting the diverse batch production needs of small, medium and large wineries, ensuring stable wine quality and improving production flexibility.