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.
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14. 实验结果表明，被试三位五通换向阀各个通道的流量特性有较大差别。
Experimental results show that there exists large difference between different passages of the valves.
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15. 在电磁阀的使用过程中，有几点是大多数学徒都不太注意的。
In the process of using electromagnetic valve, there are a few points that most apprentices are not very attention.
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16. 清洁，调节安全阀，检查是否有磨损和肮脏的阀门。
Clean, adjust relief valve -, check for worn and dirty valve.
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17. 某些阀无法关闭，有漏气。
Some valves cannot be closed. There is leakage.
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18. 逆止阀的作用是防止水倒流，有了拍门后，也就不需要逆止阀了。
The role of the check valve to prevent water backflow, with the film door, also do not need a check valve.
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19. 根据结构特点有挡板阀、插板阀、蝶阀、球阀、隔膜阀、角阀、直通阀、三通阀。
According to structural characteristics of a flapper valve, flapper valves, butterfly valves, ball valves, diaphragm valves, Angle valves, through the valve, three-way valve.
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20. 该油缸分为有安全阀和没有安全阀两种结构。
The cylinders are divided into two sets, which are equipped with pressure safety devices or without them.
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21. 三通合流阀有两个入口，一个出口，将两种介质混合成第三种介质。
Convergence devices have two three links entrance, a export, two medium mixed into the third medium.
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22. 使用的气瓶和备用气瓶之间有一个半自动调节阀来控制。
Each gas manifold shall be constructed to provide semi-automatic switch over from in-use cylinders to online backup cylinders.
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23. 实验结果表明，这种探头有较好的频率响应特性，能满足换流阀晶闸管电位分布测量的需要。
The experimental results show that the probe has good frequency response characteristics which meet the requirement of measuring voltage distribution of thyristor in converter valve.
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24. 截止阀有两个入口和一个出口。
Shut-off valves with two inlets and one outlet.
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25. 研究了配置有风阀的可调型对流散热器的热工性能及此室温调节方式在实际采暖系统中的应用效果。
The thermal property of the adjustable convection radiator fitted with a wind valve and the application effect of this adjustment mode in the practical heating system are studied.
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26. 当有流体通过阀门时，第一阀瓣开启从隔膜密封上离开。
With flow through valve, primary check opens away from diaphragm seal.
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27. 有三种类型的回压阀，即隔膜式、弹簧式和负荷杆式。
Three types of backpressure valves are diaphragm, spring and weighted lever.
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28. 有几种不同的阀在使用中，有些是反向压力阀。
Several different types of valves are in use. Some are back pressure valves.
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29. 有几种不同的阀在使用中，有些是反向压力阀。
Several different types of valves are in use. Some are back pressure valves.
