Discussed the pump pressure, installation of the balance valve and the design effectiveness of reversed return water system.
对水泵压力、平衡阀的设置、系统同程设计的有效性等作了初步的讨论。
Working principle: when the internal piping and tank vacuum, atmospheric pressure will be the valve cover, air enters the system, balance the system pressure, eliminate the effect of vacuum.
工作原理：当管道和水箱内部形成真空时，大气压便会顶开阀盖，大气进入系统内部，平衡系统压力，消除真空影响。
The balance extension tube functions to retain balanced pressure in front and at the back of the cleaner prior to the opening of the valve to prevent it from impacting the valve core.
发球筒平衡接管的作用是在通球初始时，出球接口端的阀门未开启前使清管器在发球筒中处于前后压力平衡，不能撞向阀芯。
The quick trunk injector comprises a reservoir pressure-meter, a spring balance, a transfusion pipe, a liquid valve, an air pinhead and a switch.
快速树干注射器主要由贮液瓶、压力表、弹簧秤、输液管、注药口、气门嘴、注射针头、开关等几部分组成。
As the valve can be replaced with pressure balance and the oil layer of the oil well can not be damaged, the oil and gas layer is better protected.
由于不用压井就能更换阀门，还不会对油井含油地层造成破坏，从而更好地保护了油气层。
The Model 10bp USES a force balance principle to open the relief valve and vent the system pressure when the set point is exceeded.
示范10BP使用力量平衡的原则，以打开安全阀和通风系统压力设定点时超出。
And the balance valve which is used in the air conditioning water balanced system, includes static balance valve, dynamic balance valve, different pressure control valve ect.
平衡阀主要有：静态平衡阀、动态平衡阀、压差控制阀等系列空调水平衡系统。
The article analyses the operational characteristics and insufficiencies of the reaction type pressure reducing valve and the balance type pressure reducing valve by calculation and experimentation.
本文分析直动式与先导式减压阀的结构，提出了直动式减压阀在减压回路应用当中的问题，给出了解决问题的具体方法和措施。
The article analyses the operational characteristics and insufficiencies of the reaction type pressure reducing valve and the balance type pressure reducing valve by calculation and experimentation.
本文分析直动式与先导式减压阀的结构，提出了直动式减压阀在减压回路应用当中的问题，给出了解决问题的具体方法和措施。
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