1. Not to copy others creative work, under no circumstances;2.do not rely too much on computer technology. Remember, you are a designer, not a computer draftsman;

The applicable medium temperature of different valve body and bonnet materials is as follows: the maximum service temperature of medium applicable to gray cast iron valve body and bonnet is 250 ℃. The maximum service temperature of the applicable me

High temperature conditions mainly include sub high temperature, high temperature level I, high temperature level II, high temperature level III, high temperature level IV and high temperature level V, which are introduced below. 1. Sub high temperatu

排气阀类型选择工程设计中，应根据具体的现场情况选用各种类型的排气阀，对局部最高点需安装复合式排气阀；对于长距离水平管段、长距离无折点下降管段宜安装复合式排气阀或微