?? 黄色大片免费网站,爱搞逼综合网,国内激情自拍

欧美中文字幕-麻豆入口-在线观看一级片-国语对白对话在线观看-久久久性-91伊人网-免费在线观看黄色片-国产一级二级视频-在线中文字幕观看-91官网在线观看-成人亚洲精品777777ww-色中文-av看片资源-亚洲最大成人在线-懂色av一区二区三区蜜臀-20日本xxxxxxxxx46-诱夫1v1高h-国产精品久久久久久久久免费相片-av一级免费-少妇姐姐

Back to top

首頁 ? Factory News ? What do I need to pay attention to in the process of selecting a Roots fan?

What do I need to pay attention to in the process of selecting a Roots fan?

Roots FansSelection of the process of those details are we need to pay attention to and understand? On this issue Roots fan small editor to take you to understand.
1, in the selection of Roots blower, should take into account the ventilation piping system is not tight and leakage and resistance calculation error, in order to make the fan run reliably, the system air volume and air pressure should be increased by a certain margin, but should not be too high!
2、When selecting the matching motor of the fan, the safety coefficient (K) of the motor capacity should be considered.
3、If the location where the fan is installed is restricted, the size of the fan should be considered first when choosing the fan
4, for the need to be strictly quiet places (such as hospitals, offices, theaters, kindergartens, etc.), should be used for low-noise fans.
5, in the national fan manufacturers produce the same type of fan, should be used in high efficiency, high quality, low price of the fan.
About “Roots fan selection process need to pay attention to what?” I will introduce you here, if you still have questions you can visit our website to consult the understanding.

13755181118