After initial installation , a discharge from the relief valve opening may occur due to inadequate initial flushing of pipe lines to eliminate dirt and pipe compounds 注：在闭端应用环境，如锅炉给水管道或冷却塔补水管道，由于在静态或无流动期间，供应压力有所波动，因此安全阀可能发生周期性排放。
Dtu 65 . 10 - building works - piping used for cold and hot pressure water and piping for evacuation waste water and rain water inside buildings - general rules of execution - part 1 : technical specifications Dtu 65 . 10 .建筑工程.建筑物内雨水和废水排放用加压冷热水管道.通用排放规则.第1部分:技术规范
Yellow river diversion project is a key project of shanxi province to alleviate the water shortage therein ; of which a large amount of water conveyance pipeline plays a very important role for water delivery 摘要山西引黄工程是山西省的生命工程，其输水管道担负着输水的重要角色，在工程中被大量应用。
This pe - rt pipeline system is a high temperature resistant polyethylene pipe , the pipe is extruded from pure pe with super properties , such as water pressure resistance and unique formation 各种产品均可用于住宅冷热水管道系统；工业用水及化学物质输送、排放；纯净水、饮用水管道；饮料、药物生产输送系统；以及满足其他工业、农业用管的需要。
The resin of the health and quarantine departments , the " food containers and packaging materials used unsaturated polyester and fiberglass products health act " ( gb13115 - 91 ) , is suitable for the lining of the aqueduct 该树脂经卫生防疫部门检测，符合《食品容器及包装材料用不饱和聚酯及玻璃钢制品卫生法》 （ gb13115 91 ） ，故适合于输水管道内衬层。
The water hammer and the water hammer ' s control measures are the important research task of the field of the water works and the water works automatization . the water hammer does great harm to the pipeline , and especially breaks the pipe 水利工程中的水锤现象和控制对策一直是水利工程及其自动化的重要研究课题。水锤对输水管道的危害性很大，严重时可以使管道破裂。
From these products came the introduction of many plastic products useful to high - yield agriculture such as plastic films , mulches , drip - irrigation tubing , pipes , fertigation equipment , filters , fittings and connectors , and row covers 由这些产品衍生出许多对高产农业有用的塑料产品，如塑料薄膜、塑料覆盖料、滴灌塑料管道、输水管道、灌溉施肥设备、过滤器、配件和接头以及行覆盖物。
An analysis is made of the causes for the problems of the decrease in quench water flowrate , abrasive wear of the coal water pipes , and blockage of the heat exchanger for ash water and the revamp measures , and after an inquiry into them , improvement measures are proposed 摘要对气化装置激冷水流量的降低、黑水管道磨损、灰水换热器堵塞问题的产生原因及改造措施进行分析和探讨，提出改进措施。
