最出名的一次是丰田公司的一家制动阀供应商于1997年毁于一场大火，而丰田公司居然在五天内就恢复了生产。
Toyota famously resumed production within five days after a fire destroyed a brake valve supplier in 1997.
要求而且有必要每年一次检查所有安全阀和控制阀。定期检查、测试和清洗能够保证最长的使用寿命和正常的产品功能。
Annual inspection of all safety and control valves is required and necessary. Regular inspection, testing and cleaning assures maximum life and proper product function.
由于工作条件相当恶劣，压裂泵的易损件——阀的使用寿命相当低，甚至于不足以完成一次作业(约2.5小时)。
Under the severe operating conditions, the life of its quick-wear parts, valves, is too short to accomplish one run (about 2.5 hours).
软件能够实现节流阀开度调整的一次到位，大大提高了水动力调整的速度和精度。
The software can realize the adjustment of the throttle opening only once. It greatly enhances the speed and the precision of hydrodynamic adjustment.
为此，在一次接线上采用了双12脉动阀组接线，使得一个阀组故障时仍可传送一半功率。
In order to improve its reliability, the main electric connection mode with double 12-pulse valve groups is adopted.
安装后，热水容器拥有者每年必须至少操作阀杆一次，以确保水路畅通。
Following installation, the valve lever MUST be operated AT LEAST ONCE A YEAR by the water heater owner to ensure that the waterways are clear.
每年至少手动操作降温减压安全阀一次，以确认是否工作正常。
Manually operate the temperature and pressure relief valve at least once a year to make sure it is working properly.
系统的其它部分的维护如隔膜阀的维护也是必须的。在正常条件下，阀的隔膜每两年需要更换一次。
The other parts of the system where maintenance is required are the diaphragm valves. Under normal condition, the valve's diaphragm should be replaced every two years.
阀塞在开启状态下位于阀座内，此时阀座再一次处于保护状态。
The plug is seated in the open position with the seats once again protected.
为了保持协调一致的阀座密封性能和延长阀门的使用寿命，建议用户在每当操作阀门后都清洗和冲刷美国太平洋楔塞阀一次。
To provide consistent seating performance and prolonged valve life, it is recommended that you purge and flush your Pacific Wedgeplug valve each time it is operated.
经理论分析计算，确定变速泵理想的转速，确定调节阀理想的开度，调节过程一次完成。
Calculation by theoretical analysis may ascertain the ideal rotate speed of variable-speed pump and ideal opening of regulating valve, completes adjust process at one time.
将阀门保持在这个位置，当安全阀出现可以看到的第一次排放的同时，观察仪表读数。
Hold the valve at this position and observe the reading at the moment the first discharge is noted from the relief valve.
装配时始终打开阀帽直到一次装入所有要求安装的配件可使阀体和阀帽良好配合。
The body and bonnet are best joined by holding the bonnet assembly open end up and dropping all required items into place one at a time.
此控制阀手册从1965年第一次印刷起，就已经是一个主要的参考资料。
The Control Valve Handbook has been a primary reference since its first printing in 1965.
当储罐喷放一次后，其中的压力迅速下降，使调压阀自动开启。
After one-time spraying of the tank, the pressure inside falls quickly and the pressure-adjusting valve starts automatically.
阀的操作模式表明，此类被动阀适合于在低压、一次性使用的场合。
Experiment of capillary valve shows it can be applied as passive valve under low pressure.
传统的仓式泵一般采用双闸阀作为进料阀，在输送过程中采用“集中一次输送”，即使用大容积的发送罐，然后通过较大的气耗量将物料吹至接受仓。
Traditional bin pump using the double gate valve as inlet valve. After material filled with large volume vessel, this system using a strong air flow to blow the material into silo.
传统的仓式泵一般采用双闸阀作为进料阀，在输送过程中采用“集中一次输送”，即使用大容积的发送罐，然后通过较大的气耗量将物料吹至接受仓。
Traditional bin pump using the double gate valve as inlet valve. After material filled with large volume vessel, this system using a strong air flow to blow the material into silo.
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