To avoid this discharge, install a spring-loaded, rubber seated check valve ahead of the backflow assembly.

Metal seated butterfly valve

金属密封蝶阀

Clarify the design Peculiarity and classification and uses of resilient-seated gate valve.

阑述了低压铸铁弹性阀座闸阀的设计特点、分类和用途。

Features and designs of a bubble tight, metal seated butterfly valve are introduced.

介绍了金属硬密封蝶阀的结构特点和设计特点。

Trim interference analysis of metal hard seated butterfly valve

金属硬密封蝶阀密封副干涉的分析

Research and design of the metal seated ball valve in water-coal slurry working condition

水煤浆工况用硬密封球阀的研究与设计

Research of Sealing Structure of Resilient Seated Gate Valve's Gate

弹性阀座闸阀的闸板密封结构分析

Transitional process of an electromagnetic valve actuation ( EVA) is studied with experimental method to reduce valve seating velocity.

以一个发动机电磁气门驱动（EVA）装置为对象，采用试验方法研究EVA过渡过程。

The influence of engine speeds and valve gaps on the valve seating force has been examined.

讨论了转速与气门间隙对落座力的影响。

Under the valve spring preload and seating impact force, the deformation at the site of contact accumulated more and more big, eventually leading to the valve seat fatigue failure.

气门座圈在预紧力和落座冲击力的共同作用下，在接触部位变形累计越来越大，最终导致气门座疲劳破坏。

The electromagnetic valvetrain is known as a novel fully flexibly variable valvetrain with simple structure, quick system response, and excellent valve seating performance.

作为一种新型的全可变配气机构，电磁驱动配气机构具有结构简单、响应速度快、落座特性好和调节灵活等优点。

The seating performance evaluating indicators were proposed. The control of valve seating velocity and holding force was investigated.

提出了气门落座特性的评价指标，研究了气门落座速度和落座保持的控制方法。

The results showed that capillary crack was formed from the surface cavity of billet in the process of high temperature heating-rolling and cavity and sliver defects were formed due to part melting of seating face of heavy rail.

分析结果表明：发纹缺陷是由方坯表面气孔经高温加热-轧制演变成的，掉肉和小裂口则是因重轨踏面局部融熔所造成的。

To provide consistent seating performance and prolonged valve life, it is recommended that you purge and flush your Pacific Wedgeplug valve each time it is operated.

为了保持协调一致的阀座密封性能和延长阀门的使用寿命，建议用户在每当操作阀门后都清洗和冲刷美国太平洋楔塞阀一次。

Valve Burning. This is usually an exhaust-valve problem. Any condition that prevents normal exhaust-valve seating may lead to valve Burning.

气门烧伤：这种情况通常发生在排气门。任何妨碍排气门密封面贴合的情况都会导致气门烧伤。

Pumping Efficiency Affected by the Seating Time of Valve Ball

阀球入座时间对抽油泵泵效的影响

This paper describes the principle of measuring needle valve seating time in electromagnetic injector, then presents the constitution and measuring procedure of a measuring system for needle valve seating time lag in electromagnetic injector and analyses the measuring error in the system.

阐述了电磁式喷油器针阀落座时刻的检测原理，介绍了一种电磁式喷油器针阀落座滞后时间测量系统的组成和测量过程，并对系统的测量误差进行了分析。

A Study on A Measuring System for Needle Valve Seating Time Lag in Electromagnetic Injector

电磁式喷油器针阀落座滞后时间测量系统的研究

Made with the aid preparatory hearing, written testimony from the hearing rules to determine the key issues, drawing on court proceedings perfect hearing system and the debate on cross-examination system to establish the concept of procedural justice hearing a reasonable seating layout.

提出了要借助于预备听证会、书面证言规则等确定出听证的关键议题，借鉴法庭审判程序完善听证的质证制度和辩论制度，以程序正义的观念建立起合理的听证会坐席布局。

The Touran has a versatile seating layout with a spacious middle row of seats that slides, folds and can be removed easily.

途安的座椅编排有多种变化，中间排座椅空间宽敞，可轻易地进行倾斜、折叠与拆卸。

Comfortable Problem in the Design of Seating Layout in the Cabin of Air Bus

大型客机客舱座椅布局设计中的舒适问题