鹅颈管。摇摆龙头（台上式。双阀）；
注意：双阀瓣止回阀能够安装在水平或流向朝上的垂直位置。
NOTE: Twin Disc Check Valves can be installed horizontally or in the vertical position with flow up.
为了安全起见我们要在取样点设双阀以便于安全的压降，取样口还要加护罩。
For safety we should use dual valves to aid safe pressure reduction, and cap the sample outlets.
介绍了一种新型的压力先导控制伺服阀，该阀的功率放大级采用双阀芯结构代替传统单阀芯结构。
A new servovalve using a pressure control pilot state was introduced, which USES two spools instead of single spool in power magnifying stage.
基于这种情况，本课题提出了基于负载自适应的流量伺服阀和电液比例溢流阀双阀反馈补偿控制方案。
So a new design scheme about double valve compensation feedback control system based on adaptive load is proposed.
配备可重复充装专用钢瓶，带有气、液双阀以及液位安全保护，可有效清除混入冷媒罐中的不凝气体；
The gas & liquid valves, liquid level and safety protection be furnished to the special rechargeable tank.
仿真和实验结果表明：加载系统采用双阀并联控制比单阀控制的多余力明显减小，动态加载精度明显提高。
The result shows that superfluous force is less in double valve parallel control system than that in single valve control system, and the precision of dynamic loading is increased.
由于采用了双阀孔结构设计，在最大压差下排放凝结水的同时，还有一个为二次蒸汽系统设计的预设压差系统在工作。
Because of the dual-orifice design, there is a preset controlled pressure differential for the secondary steam system, while maximum pressure differential is available to discharge the condensate.
福州西区水厂将原有的双阀滤池改造为V型滤池，重点介绍了进水系统、滤板系统、反冲洗排水系统、滤后水系统、反冲洗系统的改造。
Uneven air distribution and other problems existing in the water distribution system of the original V-type filter with ceramic tiles were analyzed.
本发明涉及改变住宅建设排水管结构及废水过滤器和卫生洁具便池双阀水箱，改变各楼层废水排水管结构利用二次水自流过滤流入便池水箱冲洗便池及冲洗拖布。
This invention relates to structural changing of the waste water drain trap in housing construction and the double valve water tank of the waste water filter and sanitary ware urinal.
液压系统采用了先进的二通插装阀系统、进口高性能的电子泵技术，实现了主缸压力与流量的双闭环控制；
The press takes use of advanced two-way cartridge valve system and imported electric pump technology which can realize double closed loop control of pressure and flow rate.
该仪器采用二泵一阀系统，由单片机控制，具有双路信号实时采集和数据处理功能。
The unit which consisted of two peristaltic pumps and a multi function sampling valve was controlled by a single chip microprocessor.
型阀采用双轴承结构，机械稳定性高，启动扭矩小，保证了阀门具有极好的灵敏度和感应速度。
V-valve dual-bearing structure, mechanical stability, high starting torque is small, to ensure the valve sensor with excellent sensitivity and speed.
TK - DL可以检测压力真空断路阀，减压防回流阀或双止回阀总成。
The TK-DL can test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies.
适用于检测压力真空断路阀，减压防回流阀或双止回阀总成，不再需要压力表和压差表。
Designed to test pressure vacuum breakers, reduced pressure backflow preventers or double check valve assemblies, allowing you to eliminate both pressure and differential test gauges.
单和双电磁阀建设。
这种双止回阀应该是美国瓦茨调节阀公司的系列CU7。
The dual check shall be Watts Regulator Company's Series CU7.
一种基于PLC的电液自动控制系统，采用了电液比例阀的双闭环控制系统。
This paper introduces an electrohydraulic control system based on PLC. A double close - loop control system with electro - hydraulic proportional valve is adopted.
在燃具上使用双控燃气稳压阀，燃烧工况稳定，适应性强，安全性高。
Applying this valve to gas appliance shows stable combustion condition, strong adaptability and high security.
建立了双级溢流阀的开启点数学模型，并通过对该点的数字仿真的数据处理，得出了经验公式。
Estabishes the opening point model for a two stages relief valve and through the data processing of mathematical simulation of that point to obtain the empirical formula.
该文介绍了一种新型的数字式液压操纵系统，系统采用并联方案，以高速电磁阀为先导控制级，通过双节流阀进行操纵系统的压力、流量控制。
It is a parallel connection system and this system USES the high-speed valve as a pilot valve to control the twin throttle which controls the pressure and the flux of the hydraulic control system.
分析了双控燃气稳压阀的工作原理、结构和优点。
The operating principle, structure and advantages of dual controlled gas constant pressure valve are analyzed.
分析了双控燃气稳压阀的工作原理、结构和优点。
The operating principle, structure and advantages of dual controlled gas constant pressure valve are analyzed.
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