the valve housing 1 whereby the individual housing parts are then connected together at the respective parting lines in addition it is of course also possible to construct the shell 5 with more than one inlet port 3 and to accommodate more than one valve seat 8 inside the housing body of the valve housing 1 it should further be noted that although the inlet port 3 and the outlet port 4 are illustrated in fig1 and 2 in substantial alignment and with substantially identical diameter such illustration is for expediency only and should not be regarded as a limitation since such configuration is far from essential to this invention it is of course also conceivable to position the outlet port 4 at an angle of less than 180 u00b0 in relation to the inlet port 3 or vice versa without departing from the spirit of the present invention moreover the shell 6 may also include more than one outlet port 4 and the plurality of outlet ports 4 may also have different inner diameters so as to allow the valve housing 1 to be used as an adaptor for connection to different pipe diameters if need be at least one pressure sensor may be arranged inside the housing body of the valve housing 1 for determining and monitoring a pressure inside the valve housing 1 signals of the pressure sensor may hereby be used for control purposes for example for operating the closure member the connection between the two shells 5 6 along the parting line 7 can be realized by a welding seam as indicated in fig1 and 2 although the shells 5 6 may of course also be firmly connected to one another through clamping and or bracing an example involves a triclamp connection which includes flanges.