The purge and balancing valves shall be a Watts Regulator Company model PB-56.
这种排气平衡阀应该是美国瓦茨调节阀公司型号PB - 56产品。
Mark 25 valves have a plug-in base or manifold, a plug-in solenoid and an optional plug-in sandwich pressure regulator.
马克25阀有一个基础或多方面的，一个插件螺线管插件和三明治压力调节可选插件。
This output can be modified by operating the special regulator incorporated in the valve (see the last pages for a description of how to regulate the valves).
气体输出量可以通过调节电磁阀上特殊调节器操作。
Several kinds of shutdown valves were compared. Then it focused on the features and related concepts of the regulator valve. It can be referenced for the selection of valves in HVAC system.
比较了几种常见的关断作用阀：重点介绍了调节作用阀的相关概念及特性，可为暖通空调系统中阀门的选择提供参考。
Several kinds of shutdown valves were compared. Then it focused on the features and related concepts of the regulator valve. It can be referenced for the selection of valves in HVAC system.
比较了几种常见的关断作用阀：重点介绍了调节作用阀的相关概念及特性，可为暖通空调系统中阀门的选择提供参考。
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