Foam Bladder Tank is one component of a balanced pressure proportioning system. Bladder Tanks require only a pressurized water supply for operation. No other external power is required. They can be used with one or more proportioners and any suitable discharge device to create a complete the foam system. The tank is a steel pressure vessel, which stores a foam concentrate within an elastomeric bladder. The concentrate is discharged from the tank by incoming water applying pressure to the bladder. This applied energy is transferred to the concentrate, supplying pressurized concentrate to the proportioner. Available in Horizontal or Vertical arrangements with trim piping and valves.