FIELD: machine building.
SUBSTANCE: valve with contact pressure adjustment comprises a valve casing (100), a ring-shaped holder (300) of the valve seat, a resilient member (400), a ball (200), an adjustment member (500) with a pair of adjustment rings (510) and an adjustment key (520) between them. In the casing (100) there is a hollow main line connector (110) and an inner space communicating with the main line. The ring-shaped holder (300) is fitted by a valve seat (310), installed on the inner circular surface of the main line connector (110) and is sliding in the direction of the inner space in the casing (100). The resilient member (400) presses the holder (300) in the direction of the inner space of the casing (100). The ball (200) for liquid flow control is installed in the inner space of the casing (100) and touches the valve seat (310). The adjustment member (500) is installed on the inner circular surface of the main line connector (110). The pair of adjustment rings (510) is set so that to be aligned with the direction of compression and extension of the resilient member (400) and to rest against the main line connector (110), the rings are designed for adjustment of the resilient member (400) length due to compression or extension of the resilient member (400). The adjustment key (520) is set between the adjustment rings (510) to adjust the distance between the adjustment rings (510).
EFFECT: simplification of adjusting the contact pressure between the ball and the valve seat in assembly in order to set the contact pressure corresponding to the medium in which the valve is used.
4 cl, 10 dwg
