The performance and structure of existing back valve are introduced, and an ultra-low pressure startup back valve, which can be fixed freely in any pipes with any directions, is designed.
对现有止回阀的性能、结构进行了分析，设计了一种可以随意安装于各种方向的管道中的超低压力启动上回阀。
Caution: Exercise care to prevent purple primer or solvent cement from running back in the valve to the diaphragm or seating area.
警告：要小心谨慎操作，避免紫色底漆或液状粘固剂流回到阀门内的隔膜或密封区域。
Export pump with check valve, it will immediately turn off to prevent reverse flow back high-pressure water pump.
水泵出口装有逆止阀时，它会立即关闭，防止高压水反向流回水泵。
A canister purge valve is opened periodically to vent the vapor back into induction system.
收集器的清除阀周期性地开启，泄放蒸气使之返回进气系统。
If the engine backfires, the sudden pressure in the intake manifold forces the valve back.
如果发动机回火，进气歧管骤增的压力就迫使阀门向后移动。
Here the air and water discharged from the return valve to the back entrance of the impeller.
在这里空气排出而水又从回流阀返回到叶轮入口。
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。
Install the valve back into pipeline following installation procedure.
按照安装步骤将阀门安装到管线内。
According to flow in a different, balanced spool valve the pressure can be pre-pressure, can also be a back pressure valve.
根据流向不同，平衡阀芯所受的压力可以是阀前压力，也可以是阀后压力。
Most of the thick oil at startup actually goes through the bypass valve back to the engine oil sump and not into your engine oil ways.
大多半厚(粘稠)的机油在启动时实际上通过旁支泄压阀又流回到油底壳而不能进入策动机油道。
At this point the upper stem has lost contact with the diaphragms. The valve should be opened to this point but not back seated.
在此时，上阀杆已经失去了同横膈膜的接触。阀门应该开启到这一点，但不能反向固定。
When installing the Series 4700, it is recommended that galvanized steel back up rings be used behind the valve flanges.
在安装系列4700夹管阀时，建议在阀门法兰后面采用镀锌钢支撑环加固。
Remove the bolts and cover, realign the diaphragm assembly, and place the cover back on the relief valve body.
拆卸螺栓和阀盖，重新校准隔膜总成，并将阀盖放回到安全阀阀体上。
The electro-hydraulic proportional control valve uses the proven force feed-back system for improved hysteresis, repeatability, and response.
电液比例控制阀使用的证明力反馈改善滞后性，重复性系统和响应。
Place the relief valve seat back into the chamber bore.
将安全阀阀座放回到镗孔内。
Return mechanism: the return driving assembly has long service life design of back stop valve and shock-absorbing function, offering easy operation.
回转机构：回转驱动总成具有反转防止阀和减震功能的长寿命设计，操作更方便。
It was a perfection of a valve that made the aqualung possible and put man back into the sea with all the freedom of a fish.
是阀的完善使研究水中呼吸器成为可能，并将人类送到海里，使其象鱼一样自由。
PVC flocking materials used by high-frequency hot press molding, gas valve back up, with both gas permeability and gas leak-proof function.
用植绒PV C料经高频热压成型，倒阀门气嘴，具有双层防漏气渗气功能。
The valve should be opened to this point but not back seated.
阀门应该开启到这一点，但不能反向固定。
There was nothing to fall back on so valvular surgery without an artificial valve - at least as a backup - was a very dangerous game to play.
所以，没有人造瓣膜的瓣膜手术是一个非常危险的游戏。
Place the screw back into the relief valve disc and tighten.
将螺丝放回到安全阀阀瓣内，并加以紧固。
A canister purge valve is opened periodically to vent the vapor back into induction system.
器的清除阀周期性地开启，泄放蒸气使之返回进气系统。
Of large air-conditioning system, using the manual control valve regulating the complex process of manually adjusting the front-end valves, back-flow will be affected.
对大型空调系统而言，采用手动调节阀调节过程复杂，手动调节前端阀门，后端流量会受影响。
The necessary back-pressure is often created and controlled by a valve that is set to operate under the desired range of conditions.
所必需的回压通常由一个阀来产生和控制，此阀被调定在所要求的条件范围内进行工作。
The control system feeds back the signals sent by the upper material level meter and the lower material level meter to the electric flashboard valve.
控制系统将上料位仪和下料位仪传来的信号反应到电动闸板阀。
All Stenner metering pumps have a 3-point roller design in the pump head, which ACTS as a check valve to prevent back flow, siphoning, overdosing and loss of prime.
泵头有3点滚筒设计，设备可作为止回阀阻止回流，虹吸，过量用药和避免大量的材料损失等。
The brine refill system on the control valve is not allowing enough water back into the brine tank.
控制阀上面的补水系统没有向盐箱中补足够多的水。
The brine refill system on the control valve is not allowing enough water back into the brine tank.
控制阀上面的补水系统没有向盐箱中补足够多的水。
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