Butterfly valve is also called a flap valve, is a simple structure of the regulating valve, but also can be used for low pressure pipeline medium switch control.
蝶阀又叫翻板阀，是一种结构简单的调节阀，同时也可用于低压管道介质的开关控制。
Analysis is done for sampling methods for resistance of low pressure gas pipeline through practical cases. Sampling formula is raised to make the previous method more complete and accurate.
本文通过工程实例，对低压燃气供应工程设计中阻力取值方法进行了分析探讨，提出了取值公式，使原有的方法更为完善、准确、全面。
It is installed in the low-pressure pipeline to filter solid particle and slimes in medium and effectively control cleanliness.
安装于低压管路中，滤除工作介质中的固体颗粒及胶状物质，有效控制工作介质的污染度。
High quality carbon steel, low alloy steel and alloy steel seamless pipes for high pressure fertilizer equipment and pipeline.
用于高压化肥设备和管道用优质碳素钢、低合金钢和合金钢无缝钢管。
The present invention has simple structure, high sealing performance, high reliability and long service life, and is used in pipeline for conveying high and low pressure medium.
本发明结构简单，密封性能好，安全可靠，使用寿命长，是安装在管路上用于输送各种高低压介质的比较理想的闸阀。
The plastic hose has been broadly used in farmland irrigation of low pressure water transfer pipeline.
塑料软管被广泛应用于农田低压输水灌溉，但至今其水力特性仍未被充分研究。
The fluid valve of self-balanced pressure can meet the requirement of on-off of the pipeline working under the condition of high, middle and low pressure.
这种闸阀能够满足在高、中、低压条件下工作的管路通断的要求。
The fluid valve of self-balanced pressure can meet the requirement of on-off of the pipeline working under the condition of high, middle and low pressure.
这种闸阀能够满足在高、中、低压条件下工作的管路通断的要求。
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