Abstract: A valve comprises a valve housing with a detachable lid, a spindle passing through the lid and clamping means for clamping the lid to the housing. The clamping force of the clamping means acts mainly in the axial direction of the valve spindle. The lid is secured between the valve housing and a clamping member. The clamping force is transmitted to one side of the lid from the clamping member and to the opposite side of the lid from the valve housing via a gasket member. The valve housing comprising guiding means for guiding and locking the clamping member into a locking position. The guiding means requires subsequent movements, one in the axial direction of the spindle and one in the form of a rotational movement around the spindle. The gasket member is elastically compressible by at least 5%, thereby maintaining a continuous sealing contact pressure between the gasket member and the lid as well as between the lid and the clamping member.

Abstract: A sealing arrangement for sealing the lead-through of a valve spindle through the cover portion of a valve. The spindle is connected to a movable valve body. There is a radially supported elastic stuffing surrounding the spindle and an attachment member axially supporting the stuffing. In the inner space of the valve there is a stationary stop member for the valve body. The stop member prevents axial movement of the valve body, beyond the fully open position of the valve. The reaction force induced in the stop member by the valve body influences the stuffing via the spindle and causes an increased axial compression in the stuffing. Thereby, the stuffing, due to its elasticity, is pressed more firmly against its radial support, and thus, gives a better sealing effect in the fully open position of the valve.