Human excessive deforestation, unscrupulous discharge sewage, a variety of industrial pollution, make even the head also don't go to the spring.
人类过度的砍伐，肆无忌惮的排放污水，五花八门的工业污染，使春天连头也不会地走了。
2
Fluid end consists mainly of module, suction and discharge valve assembly, suction and discharge spring, suction and discharge pipe, plunger, packing, safety valve and pressure regulator, etc.
液力端主要由液缸、吸入、排出阀总成、吸入、排出弹簧、吸入管、柱塞、盘根、安全阀、稳压器等部件组成。
3
Pump valve spring fracture is another common typical fault of emulsion pump with high pressure and large discharge which reduces the volumetric efficiency of emulsion pump greatly.