Variable Capacity (VC) tanks are famous for leaks in the sealing ring, resulting in potential damage to your wine. The Performing Seal by Liqisis continuously manages seal pressure in up to 5 tanks and alerts you to large leaks.
Connect your tank to the supply line and it will be up to pressure within 30 seconds. The pressure is kept within a predetermined band so tank seals will always be kept inflated. To deflate, just disconnect.