Jabsco ITT Par Accumulator Tank with BladderInternal Bladder. Smoother and More Even Flow. Internal Bladder Smoother and More Even Flow Quieter Water System Better Temperature Control Longer Pump Life Lower Battery Drain Simply Fitted to New or Existing Systems Compact Size Snap in Port Fittings include both: 1 2" Barbed Hose Fittings and 1 2" Threaded Hose Fittings Specifications: Tank: Hygienic, Light, Compact, Impact and Pressure Resistant Plastic Construction Capacity: 1 liter (33 fl oz)