A new-type electromotive force pot pressure limiting valve consists of valve bonnet valve body thimble spring valve eye ring valve seat exhaust pipe sealing ring nut and exhaust pipe .

一种新型电压力锅限压阀，包括阀盖、阀体、顶针、弹簧、 阀 提手、阀座、排气管密封圈、螺母、排气管。

Because of its superior performance the friction in friction application fields become best material such as sleeve bearing sliding bearing the valve seat seals pump wear ring etc.

因其优越的摩擦性能，在摩擦应用领域成为理想材料，如套筒轴承、滑动轴承、 阀门座、密封圈、泵耐磨 环等。

The water heating control valve is composed of a valve casing a valve outer cover an inner cover a pressure spring a valve core a positioning device and a sealing ring .

水暖控制阀由阀壳、阀外盖、内盖、压簧、 阀芯、定位装置及密封 圈构成。

Analyzing the many factors of affecting the processing precision of valve seat ring and valve stem guide hole of cylinder head .

对影响气缸盖 气门 座圈和气门导管孔的加工精度的诸多因素进行分析。

LVESV aortic valve area internal diameter of the ring and sinus in pilot group were significantly higher than those in control group ( P < 0.05 ) .

左室收缩末容积、主动脉 瓣 口面积及窦部、 环部内径高于对照组，两组比较有显著性差异（P<0.05）。

For argumentation the necessity 、 reliability and feasibility of gun-boring-finish turning engineering fully so the main research work of this text is : 1 、 Discussing the necessity of improving the processing precision of valve seat ring and valve stem guide hole of cylinder head .

为充分论证枪镗、精车工艺的必要性、可靠性、可行性，为此，本文将进行以下几个方面的研究工作：1、论述提高气缸盖 气门 座圈和导管孔的加工精度的必要性。

Failure analysis and solution of high-chrome alloy iron valve seat ring

关于 气门座高铬合金铸铁缺陷对策及分析

Retrofit of Ball Valve Sealing Ring Operating System in Longtan Hydropower Plant

龙潭水电厂 球阀密封 环操作系统改造

With this design the seat carrier was indirectly held within the valve body by means of a retainer ring which was attached to the inside of the body by threads .

在这种设计结构下，采用通过螺纹固定在阀体的 挡圈将阀座支架间接的固定在 阀体内。

Valve seat ( ring ) generally use the Teflon and other flexible materials easy-to ensure the seal and valve sealing force with medium pressure increases .

球阀阀座（ 密封 圈）一般采用聚四氟乙烯等弹性材料制造，易于保证密封，而且球阀的密封力随着介质压力的增加而增大。

Tricuspid valve repair with an annuloplasty ring results in improved long-term outcomes

在三尖 瓣修复术时使用瓣 环成形术环可改善长期预后

Therefore the pump valve is modified as follows : ( 1 ) adding a sealing groove in the upper part of the discharge valve seat as well as a sealing ring to prevent leakage at high pressure ;

为此，对泵阀做了如下改进：一是在排出 阀座上部增设1道密封坡口，加1道密封 圈，防止高压泄漏；

The cylinder head is one of the important parts of the engine and finish boring valve guide and seat ring is the key process to manufacture the cylinder cover . The machining accuracy has a significant effect on the power and performance of diesel engine .

缸盖是发动机中的重要部件之一，而枪铰导管孔与精镗 座圈 锥面又是整个缸盖加工过程的重中之重，它的加工质量直接影响对发动机的动力性能。

Discussing several ordinary processing technologies of valve seat ring and valve stem guide hole of cylinder head now .

对目前气缸盖 气门 座圈和导管孔的几种一般加工工艺进行讨论。

Influences of some structural parameters such as inlet valve seat ring chamfer inlet duct setting angle on the inlet flow field distribution are investigated with the model and several valuable conclusions are drown .

利用模型的方便性考察了进 气门 座圈倒角、进气道放置角度等结构参数对进气流场分布的影响，得到了一些有参考价值的结论。

By means of increasing the machining allowance of the valve body outer ring and 900 ring welding the product quality and the production circle can be guaranteed for optimizing the process plan .

通过采取增加 阀体外 圆加工余量、90°弧环拼焊等措施，保证了产品质量和生产周期，并力争工艺方案的最优化。

Firstly this paper analyzes the stress of the straight impaction of the valve plate against the lift limiter and the valve seat on the working process of the ring valve with the theory of sheet and mechanics of materials on the simplified assumption .

首先根据简化假设，用材料力学和薄板理论分析了 环状阀工作过程中阀片与升程限制器及 阀座正碰撞产生的冲击应力。

10 cases of complete atrioventricular septal defect demonstrated mainly an absence of the cardiac crux and a common atrioventricular valve ring ;

10例完全型表现为心脏十字交叉结构缺如和共同房室 瓣 环；

Study on the Cutting Tool for Valve Seat Ring and Valve Guide-pipe Hole of Engine

发动机 汽门座 环和汽门导管衬套孔切削工具的研究

Describe the structure characteristic and working principle of pressure seal swing check valve . Material selection and thrust ring design .

阐述了自压密封旋启式止回 阀的结构特点、工作原理、材料选用和止推 环设计。

The Empirical Study of Using the Mixed Mode Whole Ribs Pleura and Intercostal Muscle Pedicle Skin Flap Valve Ring to Rebuild the Trachea in Dogs

犬复合型带蒂全肋骨胸膜肌 瓣 环再造气管的实验研究

Metal cock ring soft seat surface pressure to the bearing surfaces such as the valve core and valve seat is concentric ring surface can be a double tight closure .

金属旋塞表面压向阀座环软支座表面，如阀芯和 阀座 环表面是同心的，就能得到双重严密的关闭。

Data of tricuspid valve ring in a portion of patients with right ventricular dysfunction were compared with right ventricular dynamic parameters during right ventricular catheterization .

部分病人进行了三尖 瓣 环运动频谱测值与右心导管压力参数相关性的比较。

Valve seat insert ( valve seat ring )

气门座镶 圈（嵌镶 式 气门 座圈）

Butterfly Valve with Rigid Sealing THE LIFE OF RING TYPE VALVE

蝶阀刚性密封的实现 环状阀升程

A raised lug on the bottom of the retainer side seat locks it into the valve body eliminating any possibility for the ring to rotate out of position .

阀座定位器侧面底部上的凸起部分将阀座锁定在 阀体内，避免出现阀座 环旋转出定位位置。

The bileaflet valve is the most widely used in clinical application which is composed of valve ring flap frame and leaflet . And the flap frame and leaflet is coated by isotropic pyrocarbon .

目前临床应用最为广泛的是双叶式机械瓣，它主要由 瓣 环、瓣架和瓣片三部分组成，其中瓣架和瓣片上涂覆有一层各向同性热解炭材料。