Unscrew the nut from the service connection of suction line valve and connect the compound pressure gauge.
将真空泵连于复合压力表，打开复合压力表和真空泵对室内机和连接管抽真空。
If the tank is not filling all the way (there should be a fill line on the inside of the tank), carefully bend the bulb of the float valve up a bit and see if the tank will fill.
如果水箱没有充满正常水量(水箱内侧应该有一条水位线)，慢慢地弯曲一下浮囊阀，看水位会不会上升。
Any leak or failure results in loss of control line pressure, acting to close the safety valve and render the well safe.
任何的渗漏或损坏都将造成控制管线压力的损失，这时关闭安全阀并确保井的安全。
A drain line should be attached to the relief valve to channel any potential discharge to a safe place of disposal.
应该在安全阀上连接一个排放管道，以将任何潜在的排放引导到进行处置的安装位置。
In addition, the water in your water pipes and toilet tanks (not the bowls) is drinkable if you closed the valve on the main water line before the flood.
此外，如果你在洪水到来前将主水阀关闭的话，那么水管中的水和厕所水箱(不是便池)里的水是可以饮用的。
For cryogenic liquid cylinders, the transfer line is connected to the cylinder liquid withdrawal valve.
对于低温液体钢瓶，转移管连接到钢瓶的液体提取阀门上。
Control supply line water pressure. install a soft seated spring loaded check valve upstream of the assembly.
控制供应管道的水压。在总成的上游安装一个软阀座，弹簧负载止回阀。
The cold water supply line to tempering valve should always be opened first to prevent possible thermostat damage.
通向调温阀的冷水供应管道应该总是先打开，以防止对温度调节装置可能产生的损害。
The main valve and pilot system can be serviced without removing the valve from the line.
不需要从管线上拆卸阀门，就可以对主阀和引导系统进行维修。
Either too low a line velocity or too high a velocity can damage valve internals and shorten valve life.
管路流速太低或太高都可能损坏阀门内部构件，缩短阀门使用寿命。
For cryogenic liquid cylinders, the transfer line is connected to the cylinder's liquid withdrawal valve.
对于低温液体钢瓶，转移管连接到钢瓶的液体提取阀门上。
A drain line should be attached to the relief valve to channel any potential discharge to a safe place of disposal.
在安全阀上应该连接排水管道，将任何可能的排放引导到安全的处置地方。
A check valve should be installed on return piping if there will be a pressurized return line or the trap drains to an overhead return line (Fig. B).
如果存在一个压力回路，或者疏水阀排放口位于回路管道的上方，则应该安装一个止回阀(图b)。
The results show that the method is feasible and effective to achieving the on-line motoring and diagnosis of valve train faults.
诊断结果表明该方法是可行的，便于实现柴油机气阀机构故障的在线实时监测与诊断。
The installation of a Watts air gap with the drain line terminating above a floor drain will handle any normal discharge or nuisance spitting through the relief valve.
连接通向地漏的排泄管的美国瓦茨气隙的安装将有助于处理通过安全阀排出的任何正常排放或有害的泄漏。
Lastly, it seems that many dealers forget to install the check valve in the air assist line.
最后，它似乎那个很多经销商忘记安装阀门在空中帮助的检查线。
Must not be smaller than the pipe size of the relief valve or have any reducing coupling installed in the discharge line.
不能小于安全阀的管道口径，也不能在排泄管上安装任何缩径管接头。
Also all safety relief valve line branch line and tubing line for instrument will be dried and purged.
此外，所有安全卸压阀、支线和仪表管线应进行干燥和吹扫处理。
The amount of air pressure required to close the valve depends upon the line pressure of the pipeline.
关闭阀门所要求的气压值依赖于管道内的管道压力。
A proper drain line connected to the valve outlet and run to a safe place of disposal must be installed.
必须安装一个适当的排泄管道，连接阀门的出水口，并且流向安全的地方。
The in-line spring-actuated lift check also is referred to as the "silent check" because the spring closes the valve before gravity and fluid reversal can slam the valve closed.
由于这种止回阀能够在重力和介质倒流撞击启闭件之前关闭阀门，因此这种直通弹簧驱动升降式止回阀也称为“静音”止回阀。
And single screw pump in the pump itself cannot set the relief valve, can only be set up in line, increase the investment of equipment cost and installation cost.
而单螺杆泵在泵本身不能设置安全阀，只能在管路中设置，提高了设备投入成本和安装成本。
Finally, as an applied example, the paper introduces the general design of multi-locations automatic cleaning line for valve parts as well as its mechanical structure and functions.
作为应用实例，介绍了阀类零件多工位自动清洗线的总体设计和机械结构及功能。
To order, specify description and extension length from center line of valve to top of handwheel or nut.
订购时，注明描述信息和从阀门中心线至手轮顶部或螺母的加长长度尺寸。
Install the Watts regulator in the supply line to the boiler with the arrow on the valve body pointing in the direction of flow to the boiler.
在锅炉的供水管道上安装美国瓦茨调节阀，将调节阀阀体上的箭头指向锅炉的水流方向。
Vent the air gap and drain line from the relief valve in accordance with code requirements.
按照规程的要求，排出安全阀气隙和排放管道的空气。
Vent the air gap and drain line from the relief valve in accordance with code requirements.
按照规程的要求，排出安全阀气隙和排放管道的空气。
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