Valves with this option have a hand wheel mounted on top of the actuator for manual valve operation.
配置这种备选件的阀门在执行器顶部安装一个手轮用于手动阀门操作。
The method, system, and computer program receive a process variable signal associated with operation of a valve.
所述方法、系统和计算机程序接收与阀门操作关联的过程变量信号。
Should stand in the side entrance operation. First open water valve to send to the temperature reached e. reascularization gas. Ignite in and out of the oven gas rear can feed.
应站在入口的侧面进行操作。先打开水阀再送电，待炉温达到规定值再通入煤气。点燃进出炉口煤气后方可进料。
Premature wear and noisy operation or vibration of the moving parts can be avoided by selecting the size of check valve on the basis of flow conditions.
为了避免出现运动部件的过早磨损、噪音或振动运行，就要根据流体状态选择止回阀的通径。
Actuators are most commonly either electric or pneumatic and can be equipped with a variety of functions and accessories for controlling valve operation.
常见的执行机构是电动执行机构或气动执行机构，而且可以配置各种各样的功能和附件来实现各种阀门操作控制要求。
This paper describes the stability of control loop consisting of refrigeration evaporator and thermostatic expansion valve. It may directly influence refrigerating efficiency and operation safety.
分析热力膨胀阀和蒸发器调节系统的稳定性，它直接影响着制冷效率和运行安全。
Crane globe valves are highly efficient for services requiring frequent operation and throttling when pressure drop across the valve is about 20% of inlet pressure.
当通过阀门的压降为管路压力的20%左右时，美国克雷恩截止阀就能够高效应用在频繁操作和节流的应用场合。
Good procedures for cylinder and proper operation are also key in minimizing problems with this valve.
钢瓶更换和正确操作的良好程序在最大程度减少这种阀门的问题方面也是很关键的。
A test and pressure relief valve should be installed to assure relief of internal pressure prior to servicing and as a visual indication of trap operation.
应该安装一个测试和压力安全阀，确保内部压力能够在维修前得到释放，并作为疏水阀工作的直观显示。
High sensitive electromagnetic valve control the flow of water, the servo control system, the operation is extremely simple.
高灵敏电磁阀控制水流，随动控制系统，操作异常简便。
A throttle valve must be installed along outlet pipeline when the conditions of work are not clear or stable, this can guarantee operation at the design point.
当工作条件不明或不稳定时，出口管路中必须安装节流阀，以保证泵在设计点运行。
In continued operation the chain can jump a tooth on the drive sprocket or break entirely, with either case resulting in engine damage from valve-piston collisions.
在继续运作链可以跳转牙齿的驱动器上链轮或完全中断，与任何一种情况下造成的损害阀发动机活塞碰撞。
To avoid water damage or scalding due to valve operation, a drain pipe must be connected to the Pressure Safety Relief Valve and run to a safe place of disposal.
为了防止这种安全阀发挥作用造成水破坏或烫伤，必须在安全阀上安装排泄管道，将排放出的水引导到安全的排放地点。
Corrosion products formed by these reactions can prevent normal valve operation and can become embedded in the elastomeric stem tip, preventing the valve from making a complete seal.
这些反应产生的腐蚀产物会阻止正常的阀门运转，深入到人造橡胶阀杆顶端，造成阀门不能完全密封。
To ensure proper operation, this valve must be installed by a qualified service technician or licensed plumbing contractor in accordance with these instructions and local plumbing codes and standards.
为确保设备安装正确性，本安全阀安装须由有资格证书的管道承包商或维修技术人员按照说明书及其他相应规定进行。
Valve shall be installed in accordance with manufacturer's written Installation and Operation Manual and approved submittals.
应该按照制造商书面安装和操作手册和经过认可的资料来安装阀门。
The cycle of operation of the four-stoke engine begins with the piston at TDC and the intake valve open.
四冲程发动机的工作循环是以活塞在上止点、进气门打开为开始的。
Can swipe the spheroid clean on the sharp valve seat edge at the time of each operation.
每次操作锋利的阀座边缘都可以把球体刮擦干净。
The operation programme of DN1400 butterfly's valve control system was introduced, and the designs of its hydraulic pressure control system and electric control system were explained.
介绍了DN1400蝴蝶阀控制系统的操作程序，并详细阐述了其液压控制系统和电气控制系统的设计。
Objective To assess the effect of combined application of valve repair operation and laser photocoagulation in patients with primary deep venous valve dysfunction.
目的探讨股浅静脉瓣窦环包联合激光光凝技术治疗下肢深静脉瓣膜功能不全的手术治疗方法。
The valve is adjustable so it matches the amount of flash present under full capacity operation or to meet the velocity requirements of the system.
阀门是可以调节的，以匹配满负荷情况下出现的闪蒸量，或满足系统的速度要求。
The higher flow capacity and reduced turbulence in the valve allow the barrel filling operation on the scale to be accomplished faster and with less splashing and waste.
流动性更好了，也降低了阀门内流体的紊乱，因此灌桶过程更快，溅出浪费也更少。
Check valve should be installed in the bottom of suction pipe of pump to make sure operation is prompt.
泵吸入管路底部应安装截止止回阀，确保其操作灵活。
Permits operation of a valve with a standard utility (AWWA) wrench.
—使得阀门可以采用标准通用(AWWA)的扳手来操作阀门。
Permits operation of a valve with a standard utility (AWWA) wrench.
—使得阀门可以采用标准通用(AWWA)的扳手来操作阀门。
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