针对不同泵型号其易损件波纹管的使用寿命波动较大，改进了波纹管的参数设计。

But the lifetime of bellows fluctuated very much for different pump. Through analysis, we modified and tested them in the field test.

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所以如果与实际工况需要流量相差太多的话，那就只能更好型号更大一点的泵。

So if you need to flow with the actual working condition differ too much, it can only be better model bigger pump.

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在同一系列里的大多数型号的泵的空气马达是可互换的。

In the same series of most types of pump air motor are interchangeable.

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