Valve with a fixing device

The valve (1) has a housing (2) and a fastening device (3) for screwing the housing with a carrier element (4). The fastening device has two fastening units (5,6) spaced from each other for fastening the housing at the carrier element. One of the fastening units is screwable and the other fastening unit is a form-locked fastening unit, over which the housing is supported at the carrier element in torque-proof manner against rotation about a screw axis (10) of the screwable fastening unit. One of the fastening unit is integrally formed with the housing.