NOVELTY - The hydrogen separator apparatus for an electrolysis cell (305), comprises a separation chamber in fluid communication with the electrolysis cell, a product conduit in fluid communication with the chamber, and single controllable purge path in fluid communication with the chamber. The controllable purge path is disposed at a bottom of the chamber such that in response to normal operation of the cell, exposed to water and responsive to conditions corresponding to operation of the cell. The purge path comprises a controllable open solenoid valve.    USE - The hydrogen separator apparatus is useful for an electrolysis cell (claimed).    ADVANTAGE - The hydrogen separator apparatus has a high pressure of greater than 100 psi, an ability to increase an overall reliability of an electrochemical cell by eliminating a gas purge path controllable valve and an ability to reduce a cost of an electrochemical cell system by eliminating an extended time exposure of a controllable valve to hydrogen gas.    DETAILED DESCRIPTION - The hydrogen separator apparatus for an electrolysis cell (305), comprises a separation chamber in fluid communication with the electrolysis cell, a product conduit in fluid communication with the chamber, and single controllable purge path in fluid communication with the chamber. The controllable purge path is disposed at a bottom of the chamber such that in response to normal operation of the cell, exposed to water and responsive to conditions corresponding to operation of the cell. The purge path comprises a controllable open solenoid valve strategically disposed to reduce hydrogen embrittlement, a flow rate control, a liquid, a gas, and a mixture of liquid and gas. The conditions corresponding to operation of the electrolysis cell comprise a level of liquid within the separation chamber, a maximum operating pressure of gas within the separation chamber, an initiation of operation of the electrolysis cell, and a conclusion of operation of the electrolysis cell. An INDEPENDENT CLAIM is included for an electrochemical cell system.    DESCRIPTION OF DRAWING(S) - The figure shows an electrochemical cell system.    Process water (102)    Hydrogen gas (112)    Power source (120)    Electrolysis cell (305)    Pump. (308)