A beverage maker device is disclosed. In embodiments, the device includes an external housing and a water tank coupled to a water supply via an inlet. The beverage maker includes a manifold within the housing, the manifold controlling the dispensing of the water into a server or through a faucet via solenoid valves. Within the inlet body connecting the tank to the water supply are plumbed two pressure transducers on either side (e.g., tank-side and coupling-side) of a restriction orifice. The tank-side and coupling-side pressure transducers sense flow pressure on their respective sides of the restriction orifice and generate tank-side and coupling-side flow pressure signals. Within the housing a process control board (PCB) includes control processors and control circuitry in communication with the solenoid valves. The PCB control processors determine a differential pressure associated with the water flow based on the received tank-side and coupling-side pressure signals.