Abstract: The valve member (8) of a ball valve is retained in the valve housing (1) of the valve between an annular seal (21) and an annular retainer (22) which is mounted through one of the branches of the valve housing. The annular retainer (22) is secured in the valve housing (1) by being pressed into said housing and in the valve housing projecting means (23) are provided for engaging the annular retainer. A well defined and optimum sealing pressure is achieved between the valve member (8) and the annular seal (21). According to a method of mounting the valve, the retainer is pressed through a branch and beyond projecting engagement means until the pressing-in force reaches a predetermined value corresponding to the sealing pressure aimed at.

Abstract: A cock has a handle (17) for rotating the cock plug (3) by means of a stem (5), and between the handle (17) and the stem (5) a gear transmission (22,37) is arranged. One part of the gear transmission consists of a gear wheel (22) centrally secured in the handle, and the handle (17) is shaped as a part of the housing which together with a housing element (8) form a cavity (21) wherein the gear transmission (22,37) is arranged. The housing element (8) is non-rotatably connected with the housing (1) of the cock. In order to obtain a simple and compact gear transmission the handle (17) is arranged with each central axis (26) displaced parallel to the axis (6) of the stem (5), and moreover the stem (5) is non-rotatably connected with a gear wheel sector (24) at the axis (25) of the sector. Furthermore, the teeth (37) of the gear wheel sector (24) engage with the teeth of the gear wheel (22) on the handle (17).