Plastic ball valve and method of its manufacture.

摘要

The invention relates to a ball valve and to a method for its manufacture. The ball valve, which is intended, in particular, for gas supply lines, comprises a housing (1) which is made of plastic, has two pipe connection stubs (2) and in which a valve ball (3) is supported by means of two bearing rings (4). The bearing rings (4), which are arranged on opposite sides of the valve ball (3), are connected to one another by an annular insert (6) provided with through openings (6a) and to a bearing bush (8) for the operating shaft (7) which engages in the valve ball (3), and, in this preassembled condition, are placed in an injection mould for the production of the outer shape of the housing (1) and embedded in plastic.