No matter how the valve is installed, the back of the upstream seat protects the face of the downstream seat.
无论阀门如何安装，上游阀座的后背都能够保护下游阀座的表面。
Many studies were carried on the technologies and properties of laser cladding on the seal face of valve, but lack of contrast data with plasma spraying Alloy applied at present.
气门密封面激光熔覆的工艺和性能研究较多，但激光熔覆的合金组织和性能与现在气门密封面生产应用的等离子喷焊合金的对比数据较少。
Raised-face seat. A groove around the seat collects particles pushed aside by the knife and prevents clogging. When the valve opens, media pressure cleans the groove.
凸面阀座。阀座周围的槽将颗粒收集起来，并排挤到闸刀旁边，以避免出现堵塞。当阀门开启时，流体介质压力就会清洗槽内的颗粒。
If it is found there is damage to the valve face should be immediately suspended, can be specialized material repair the lesion, or entrust the relevant units of production.
若发现阀门面有损坏时应立即停用，可用专门材料修补患处，或委托有关生产单位生产。
By laser cladding, the sealing face of the in outlet valve parts in methylamine pump in urea production line has been strengthened.
采用激光熔覆技术对尿素生产线上的甲胺泵进排液阀零件密封面进行强化。
The face seals provide constant guiding throughout the valve stroke, maintaining continuous contact with the gate.
在阀门闸板运动的全过程中，密封面都对闸板提供恒定的引导，保持与闸板连续稳定的接触。
Sufficient ankle ministry and sufficient bottom achieve a face not to suit to apply local skin valve transfers repair.
足踝部和足底部创面不适合施行局部皮瓣转移修复。
Using the MIG surfacing method, Ni-alloy was deposited evenly on the sealing face of valve to enhance the performance and prolong the life of the valve.
采用熔化极惰性气体保护堆焊方式，在阀体密封面上均匀地熔敷镍基合金的耐磨焊层，从而达到改善阀体密封面的表面质量，显著延长阀体寿命的目的。
Upon installation, a hand-tightened union nut serves to compress the face-seal of a Chemtrol valve.
一旦安装完毕，手动旋紧的管接螺母就紧压着Chemtrol阀门的密封面。
The key problems of technique for plasma hardfacing for sealing face of valve such as blank making. Process selecting and quality controlling.
就阀门密封面等离子弧堆焊的技术关键问题：毛坯加工、工艺选择及质量控制等。
This paper introduced the fast detection device of acting length of the sealing face which is suitable for on line detection of inlet and exhaust valve of the engine.
本文介绍了密封面作用长度的快速检测装置，此装置适用于发动机中进排气门的在线检测。
Upon installation, a hand-tightened union nut serves to compress the face-seal of a Chemtrol valve.
在安装期间，手动紧固管接螺母用来压紧Chemtrol阀门的表面密封。
The utility model relates to a novel semi-elliptical fixating valve tower plate which flushes out through a tower plate body and comprises a vale face and two valve legs.
本实用新型涉及一种新型半椭圆固定阀塔板，由塔板本体冲出，包含阀面及两条 阀腿。
The reason of the formation of gas porosities and cracks on the head face of valve tappet has been studied.
本文分析了气门挺杆端面气孔、裂纹形成原因。
Main structured items are: JDQM full face mask, air supply valve, pressure regulator valve, backboard, pressure gauge, alarming whistle, medium pressure tube, carbon fiber composite cylinder, etc.
主要结构有：JDQM全面罩、供气阀、减压阀、背板、压力表、报警哨、中压管、碳纤维复合气瓶等。
Fixes press air escape valve department refer to API and about standard optimize design face become, It structure new, Performance dependable.
定压放气阀系参照api及有关标准优化设计面成，其结构新颖，性能可靠。
Up chamfer, down chamfer and working face must be correctly dressed so that the valve seat can acquire a longer service life.
气门座要获得高的使用寿命就必须对其上、下倒角和工作面进行适当的修整。
The utility model relates to a piston valve which is installed in a cylinder tube of a pressure device, wherein the cylinder tube has an inner ring wall face towards the piston valve.
一种安装在压力装置的缸管内的活塞阀，在缸管上具有一朝向活塞阀 的内环壁面。
After the disintegration of the distribution valve, the main body was found face has scratches.
后解体分配阀，发现主阀体工作面已擦伤。
The utility model relates to an end-face sealed manual three-position four-way reversing rotary valve.
本实用新型涉及一种端面密封手动三位四通换向转阀。
The utility model relates to an inclined-tapering face multiple-way valve.
本实用新型是一种斜锥面多通阀。
The valve face is provided with a pilot hole or a micro fixing valve.
阀面上 冲有导向孔或微型固阀。
The magnetorheological valve utilizes a scheme of arranging a nonlinear flow passage on a corresponding end face of a locating disc and a concentrating flux disc.
采用的方案是，定位盘与导磁盘的对应端面上，设置非直线 形液流通道。
And the brush of high temperature gas and impact load speeded failure. The cracks on valve sur-face are primarily emerged due to inter crystalline chap, then fatigue pr...
高温燃气冲刷及冲击负荷的作用，加速了该气门的失效，其过程是由沿晶界龟裂，然后以此为裂源而引起的疲劳扩展。
The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
The utility model comprises an air drum, a setting scale for air inflow, a positive negative pressure gauge, a respiration valve and a face mask;
本实用新型有一个气鼓，一个进气量设定标尺，一个正负压力表，一个呼吸活瓣，一个面罩；
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