MINIMUM PRESSURE VALVE Russian patent published in 2013 - IPC F16K15/02 

FIELD: machine building.

SUBSTANCE: minimum pressure valve is equipped with a casing with an inlet opening and an outlet opening, which are connected via an internal system of channels. The above channel system is provided with a moving valve body. The above moving housing is borne against the support surface around the inlet opening in closed position by means of a spring and thus shuts off the inlet opening. When in open position, the above moving housing is located at the distance from the support surface so that the inlet opening is connected to the outlet opening through the channel system. The valve body is installed in the valve casing. The above casing is made in the form of a cylindrical casing forming a cylindrical chamber, which is closed on one end with an end wall and open on the other end. The casing is rigidly fixed in the above channel system and forms together with the valve body a closed inner cavity connected to the inlet opening through a channel.

EFFECT: spring with lower rigidity is used, owing to which the range of pressures, in which the valve body moves, is reduced.

14 cl, 3 dwg