Models ASL and AST of the balloon accumulator consist of seamless cylindrical pressure vessels made of high strength steel.
The accumulator is subdivided into gas and fluid sides by an elastic bladder mounted inside the container.
In the ASL type, fluid is also in the bladder.
The AST delivery accumulator is designed for connection to nitrogen cylinders. The diffuser bar prevents damage to the airbag while the accumulator is working.
A nitrogen cylinder used as a backup device increases the volume of gas in the accumulator. This means that a smaller accumulator can be used for the same volume of gas, and costs can be reduced.
When the fluid is pressed into the accumulator, the gas in the bag is compressed, so the pressure increases. The gas volume decreases, and on the fluid side, fluid can flow into the accumulator. As soon as the pressure on the fluid side falls below the gas pressure, the accumulator is emptied.