The utility model relates to a marine tetrad valves, its characterized in that marine tetrad valves constitute by four control valve bond, two liang four control valves are a set of, and the bridginghas three -way pipe C between two three -way pipe A, B's branch pipe respectively through three -way pipe A, B series connections, four control valve bond become H type structures, two sets of controlvalves entry is connected with two vapour sources through three -way pipe D, E respectively, and two sets of control valve outlet connect respectively on two branch pipes of elbow three -way pipe, three -way pipe C's branch pipe and three -way pipe D, E's branch pipe is the delivery outlet, and the person in charge of elbow three -way pipe is the delivery outlet, forms controllable four ways output. Its characteristics are: compact structure, small satisfies installation and operation requirement in narrow and small space, and convenient operation and allotment control through the reasonablecooperative control who sets up four delivery outlets and four control valves, can realize multiple output mode.