| 摘要 |
FIELD: mechanical engineering. SUBSTANCE: throttle valve has body which may be mounted in pipe line, seat and disk having parts of stem on opposite sides which are tightly fitted in holes provided in seat and in body for turning of disk between open and closed positions. Ring practically fills the groove and its motion is limited together with shut-off member or seat; this ring provides for reliable seal between shut-off member and seat. EFFECT: enhanced reliability. |
