xBloom Inline Pressure RegulatorThe xBloom Studio features an internal pump, allowing you to choose between using the included water tank or connecting to an external water source with 1 4" OD tubing. For integration into a pressurised system from your home or filter system, this accessory ensures seamless plumbing without risking damage to your machine. For non pressurised sources like a 5 gallon jug positioned under your coffee cart, simply attach the tube (up to 19 inches long)