A valve for a liquid system of a vehicle having a valve housing with a multiplicity of valve housing openings, a valve body that is arranged in the valve housing so as to be rotatable about a rotational axis and has at least one flow-conducting connecting passage for the flow-conducting connection of at least two valve housing openings of the multiplicity of valve housing openings. A valve seal is arranged between the valve housing and the valve body. A valve actuator rotates the valve body about the rotational axis, and a multiplicity of flow passages corresponding to the valve housing openings for the flow-conducting connection of the valve to a remainder of the liquid system, are provided. The flow passages are jointly formed from a single first passage shell and a single second passage shell. The first passage shell is simultaneously formed as the valve housing.