All of these are normally closed valves, except for reducing valves, which are normally open.
所有这些都是正常关闭阀，除减少阀门，一般开。
Valve types include Normally Open and Normally Closed valves, for use in fuel, hydraulic, or pneumatic applications.
阀门有常开和常闭两种，可用于燃油，液压或气动应用领域。
Ukraine says it had been forced to use reserves to maintain the pressure needed to move gas to European consumers before the valves were closed.
乌克兰说，他们被迫动用天然气储备来维持管道阀门被关闭前向欧洲的顾客运送天然气所必需的压力。
Keep valves closed when cylinders are not in service or empty.
当钢瓶没有使用或是空瓶的时候，保持阀门关闭。
Before starting test, all needle valves on test kit must be closed.
在开始检测前，检测组件上的所有针形阀都必须关闭。
Hydrostatic pressure testing of the inlet valves (with open and closed disc) under a pressure of 1, 5 times the maximum static pressure plus water hammer for 30 minutes.
持续30分钟1.5倍的最大静压与水锤压力下，对入口阀(带打开和关闭盘)的静水压试验。
Some valves cannot be closed. There is leakage.
某些阀无法关闭，有漏气。
Before starting test all needle valves must be closed.
在开始检测之前，所有阀门都必须关闭。
This means that the operating mechanism must be able to move sufficiently far enough away from the valve to allow the valves to be fully closed against its seat by the valve spring.
这意味着操作机构必须离阀门足够远以允许阀门通过气门弹簧使其完全关闭。
The control system so regulates the valves that they are closed when overflow occurs.
控制系统对阀的调节方式是当发生溢流时它们被关闭。
Slamming of check valves is the result of failure of the valve disc to reach its closed position before the fluid flow reversal.
止回阀的撞击现象，是由于在流体倒流之前，阀门的阀瓣没有到达关闭位置造成的。
All valves are furnished with open and closed lockouts. The lockouts are full actuator rated and allow actuator removal while it is in the locked position.
所有阀门都配置开启和关闭锁定装置。这种锁定装置与执行器全面匹配，能够在锁定状态下与执行器一起拆卸。
All needle valves must be closed on test kit.
检测组件上的所有针形阀都必须关闭。
All valves are furnished with open and closed patented lockouts. The lockouts are full actuator rated and allow actuator removal while in the locked position.
所有阀门都配置开启和关闭专利锁定装置。这种锁定装置与执行器全面匹配，能够在锁定状态下与执行器一起拆卸。
Valves should be installed with the disc in the closed or almost closed position. This will prevent damage to the disc sealing edge.
安装阀门时，蝶板应该处于关闭或几乎关闭的位置。这是为了防止蝶板密封装置受到损坏。
Internal stops provide positive over travel protection for power actuated valves and act as a reference to position the discs in the open and closed positions.
内置的止动装置为动力执行机构提供行程保护，并且作为参考坐标在开启和关闭位置定位阀瓣。
An inspection of the plant revealed that a cross connection in the pipes carrying the milk allowed mingling of raw milk with pasteurized milk when certain valves were incorrectly closed.
一项关于工厂的检验报告在输送牛奶管道的十字联结处，当某些阀门被不正确关闭时，使生牛奶和杀菌消毒过的牛奶混合。
How often can a valve be opened and closed? NIBCO Block valves and ordinary gate valves were subjected to endurance tests.
一个阀门能够关闭和打开多少次？美国尼伯科关闭阀和普通闸阀已经通过了耐疲劳试验。
These valves can be normally closed, normally open or universal.
这些阀门可以常闭，常开或普遍。
This paper designs the compositive valves which components of fill oil valves and lock valves, closed oil tank and device connector.
本文对系统的吸排阀和锁阀组成的集成阀块、密闭油罐及直驱式系统的其它连接部件进行了结构设计。
Any combination of normally closed, normally open or universal valves may be grouped together.
任何结合在一起的常闭，常开或通用阀门可归纳。
These series are available in no voltage release, electrically tripped, and free handle constructions as well as latched open or latched closed for 2-way valves.
这些系列产品可以在没有电压释放，电动绊倒，并免费办理建设以及闭锁阀打开或关闭锁定为2路。
The steam engine is designed to be a "closed-loop" system, in which water escaping from the cylinders through the exhaust valves is captured and cooled in a condensing unit.
蒸汽引擎被设计成闭路循环系统。当从气缸中排出的水蒸汽经过蒸汽阀门时，这样的系统可以将它们截留，然后送进压缩包里冷却。
These provide access to the central bore of the well underneath most of the heavy valves which should have closed off the flow of oil, but for some reason did not.
这些为连接在许多沉重的真空阀下的钻井中心的钻孔提供了条件。这些真空阀本应该阻止石油的外泄，但出于某种原因没有做到这一点。
Mud valves and Angle by the hydraulic cylinder type combination valve, hydraulic power drive cylinder valve lift, the valve open or closed channel, in order to achieve the fluid off.
排泥阀产品由液压缸和角式截止阀组合而成，液压缸内动力带动瓣升降，使阀体通道开或闭，以达到流体通断。
Machinery to be in working condition as far as possible, i. e. water and oil to be in system, but all valves to be closed.
所有机械设备应尽量处于可工作状态，即管路及系统内的油水到位，但须关好阀门。
Compared with other plate type flue gas exhausts, the utility model has the advantages that when the valves are closed, the utility model has high gasproof performance and soundproof function.
阀门关闭时，有高的气密性能，并有隔音作用，优于其它型式的板式排烟口。
That oyster closed up its valves.
那个牡蛎把壳合拢起来。
In the case of flame failure, the control box activates a "safety shut down" within two seconds of the opening of the gas valves are immediately re-closed.
如果点火失败，程控器指令“安全闭锁”二秒钟内打开的气阀马上关闭。
In the case of flame failure, the control box activates a "safety shut down" within two seconds of the opening of the gas valves are immediately re-closed.
如果点火失败，程控器指令“安全闭锁”二秒钟内打开的气阀马上关闭。
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