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| 11. | Leaks can occur along the valve stem through the packing or diaphragms. Leaks of this type can be stopped by closing the valve and venting any pressure from the outlet. |
| 关闭阀门，从排气口排出压力可以停止这种泄漏。 |
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| 12. | " Before installation, check line of flow through valve so that valve will function properly. Close valve completely before installation. Apply wrench to hex next to pipe and guard against possible distortion." |
| 安装前要完全关闭阀门。将扳手套在靠近管道的六角螺栓头上避免可能产生的变形。 |
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| 13. | "Swing-type check offer the least pressure drop and offer simple automatic closure; when fluid flow stops, gravity and flow reversal closes valve." |
| 旋启式止回阀压降最小,能够完全自动关闭,即在介质流动停止、重力和介质倒流的状态下自动关闭阀门。 |
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| 14. | Particularly in cases where valve actuators are activated at irregular intervals or not at all over an extended period of time, the advantages of the overload resistance of pneumatic drives become apparent, since deposits or caking can lead to considerably increased breakaway torques. |
| 此气动驱动装置尤其在不定期开启或长时间关闭阀门制动器的情况下才能明显体现其优势，因为（内燃机里的）沉积或烧结物会引起起步转矩逐渐增加。 |
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| 15. | Sensors for detecting flammable vapours and smoke alert plant personnel to potential hazards, and can also trigger automatic control systems that close valves to prevent the release of more hazardous material |
| 探测可燃性烟雾的探头给工厂人员发出有潜在危险的警报，并且可以触发自动控制系统，关闭阀门以防止泄漏更多的危险物， |
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| 16. | When disconnecting cylinders with diaphragm valves, it is most important to double close the valve and to properly install the outlet seal. Failure to use this procedure can result in release of the product into the environment. |
| 当切断钢瓶和隔膜阀的连接时，两次关闭阀门和正确安装排气口密封是最重要的。不采用这个程序会导致产品泄漏入环境。 |
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| 17. | The in-line spring-actuated lift check also is referred to as the "silent check"because the spring closes the valve before gravity and fluid reversal can slam the valve closed. |
| 由于这种止回阀能够在重力和介质倒流撞击启闭件之前关闭阀门,因此这种直通弹簧驱动升降式止回阀也称为"静音"止回阀。 |
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| 18. | If a leak develops in a customer system, close the cylinder valve and vent residual product, and purge the lines with inert gas before attempting repairs. Use appropriate protective equipment (SCBA). |
| 如果在用户的系统里发生了泄露，关闭阀门并排出残余产品。在试图修理之前，用惰性气体净化管道。使用合适的防护装备（SCBA）。 |
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| 19. | "Butterfly valves, sizes 8"and larger, when used on liquids, show a marked increase in dynamic torque which tends to close the valve. For this reason, gear operated or actuated valves are recommended." |
| 对于公称通径大于8英寸的蝶阀,如果是在液体中使用,则在关闭阀门时,动态扭矩有比较明显的增加。因此,建议使用蜗轮操作装置或驱动装置操作的阀门。 |
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