FIELD: machine engineering.
SUBSTANCE: valve contains a valve body that limits a pressure chamber; a valve seat attached to the valve body; and a valve stem slidably located in the valve seat. The valve stem includes a first portion that is spaced from the inner surface of the valve seat thereby forming a first fluid channel, and a second portion that passes axially from one end of the first portion and is in directional engagement with the valve seat inner surface thereby forming a second fluid channel. In this case, the circulation zone of the first fluid channel is smaller than the circulation zone of the second fluid channel.
EFFECT: decreased icing probability of the valve seat inlet part, simplified valve guide design.
9 cl, 8 dwg
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