FIELD: motors and pumps.
SUBSTANCE: present invention relates to valve device (1) comprising valve body (2), valve inlet (3), valve outlet (4), flow regulator element (5) and flow regulator saddle (6). Regulator saddle (6) is located in the flow channel connecting valve inlet (3) to valve outlet (4). Flow regulator element (5) is configured to interact with regulator saddle (6). Valve assembly (1) comprises discharge valve member (7) for establishing a predetermined flow at a predetermined opening position of the flow regulator element. Valve device (1) comprises liner (8), discharge valve element (7) being mounted on liner (8). Liner (8) comprises one or more elongated grooves (17), grooves (17) reduce the flow rate of the fluid through liner (8). In addition, the invention relates to a liner for such valve device (1).
EFFECT: invention makes it possible to produce valve device (1) with discharge valve element (7) in a simple manner and at a low cost.
14 cl, 8 dwg
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