1, before installation, check the shape of air control needle valve is damaged, if there is damage, may cause high pressure air control valve can not be used normally.

2、安装前，检查阀接口、阀内部以及阀表面是否干净，如果不干净的话，可以用气吹扫。

2, before installation, check valve interface, valve internal and valve surface is clean, if not clean, you can use gas purging.

3、按照气控针阀结构，正确安装针阀于管路或系统上。对于进出口有标识的气控针阀，按照标识连接。对于进出口没有标识的气控针阀，按照“低进高出"的原则连接，即处于低位的连接口是进口，处于高位的连接口是出口。注意管路和系统也须是清洁的，并且系统中应安装有过滤器以保护系统元器件。

3, according to the air control needle valve structure, correctly install the needle valve in the pipeline or system. For the import and export of air control needle valve, according to the identifier connection. For the import and export of air controlled needle valve, according to the "low in and out" principle, that is, the low level of the entrance is the entrance, the high level of the outlet is the exit. Attention should be paid to the piping and system, and a filter should be installed in the system to protect the system components.

4、安装完毕后，检查管路安装是否正确，尤其是控制气控针阀开启/关闭的空气压力是否在供应商指定的压力范围内。

4, after installation, check the pipeline installation is correct, especially to control the air control needle valve opening / closing the air pressure is in the supplier specified pressure range.

5、安装完毕后，启/闭针阀2-3次，以检查其性能是否良好。

5, after installation, start / close the needle valve 2-3 times, to check whether the performance is good.

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