Foam bladder tank skids usually consist of multi-fit bladder tank or dual bladder tank skids. Consists of two or more bladder tanks, adapters and accessories with a total bladder tank capacity of up to 15,000 liters. Modular Package UL Listed Tanks Manufactured to ASME Code Section VIII Div I Firetech bladder foam tanks can be manufactured in a variety of different materials such as carbon steel tanks or stainless steel tanks.