UK GAFLOON PIPE GROUP LTD（英国卡弗龙管道集团公司）是一家专注家装给排水管道集团公司，是集各种新型塑料管道研发、生产、销售及服务于一体的现代化、高科技的综合性企业实体，坐落在Chase Business Centre London England，卡弗龙管道品类覆盖PPR管、PVC管、PERT地暖、卫浴系列等，于欧美地区销售长达20多年，销售网络多达108个***及地区，在家装水管市场多有褒誉。

‘UK GAFLOON Pipe Group Ltd’ is a modern and high-tech comprehensive enterprise entity which focuses on the production, development,  sales and service of various new types of plastic pipes. It is located in chase Business Centre London England. The categories of GAFLOON pipes cover PPR pipes, PVC pipes, PERT floor heating, sanitary ware series, etc, It has been sold well in Europe and America for more than 20 years, with a sales network of 108 countries and region. It has a good reputation in the domestic water pipe market

GAFLOON（卡弗龙）PPR管的接口采用热熔技术，管子与管件之间完全融合，是目前给水产品成熟、、实用的技术，所以一旦安装打压测试通过，不会再漏水，可靠度极高。水管在房子中犹如人身体上的大动脉，承担着压力（水压）、输送着生命必需品（水），采用的PPR水管，用得安全、用得放心、用的更是健康和安全，卡弗龙承诺质保终身（七十年）。

The interface of Gafloon PPR pipe adopts hot-melt technology, and the pipe and fittings are fully integrated. It is the most mature, safe and practical technology for water supply products at present. Therefore, once the installation and pressure test are passed, there will be no water leakage and the reliability is very high. The water pipe in the house is like the artery of human body, which bears the pressure (water pressure) and conveys the necessities of life (water). With high-quality PPR water pipe, it is safe to use, safe to use, and healthy and safe to use. Caffron promises to guarantee your life (70 years), so that you will not worry about it.

“隐蔽工程”是一个非常重要的问题，现代装修水管都是采用埋墙式施工，如果水管渗漏和爆裂将带来难以弥补的后果。Gafloon卡弗龙管道，为保证质量，严格检测，欢迎来咨询。

"Hidden engineering" is a very important problem. Modern decoration water pipes are built with buried walls. If the water pipes leak and burst, it will bring irreparable aftermath. Gafloon Pipe and Fitting, in order to ensure the quality, strict testing, welcome to seek advice from us.

3 .水击的影响：

水击是指压力瞬变过程，是管路中不稳定流动所引起的一种特殊的重要现象。当由于某种原因引起管路中流速突然变化时，例如开关阀门过快，突然断电停泵，都会引起管内压力突然变化，造成水击。水击又称水锤。通常，在给水管道系统中，由于下列原因造成水锤：

（1）水泵的关闭

（2）给水管道系统压力过高，阀门、突然关闭。发生水击现象的物理原因，主要是由于液体具有惯性和压缩性。阀门关闭产生增压波，增压波传到管路上游反射回来的减压波又传到阀门处为止，所需时间为2L/a。L=管长度；a=压力波速。

当阀门关闭时间Tc<2L/a，早由阀门处产生的向管道上游传播，而又反射回来的减压波，在阀门全部关闭时还未到达阀门处，则在阀门处可能产生大的水击压力，称为直接水击。

当阀门关闭时间Tc>2L/a，由管道上游反射回来的减压波会部分抵消水击增压，使阀门处的水击压力不致于达到直接水击增压值，称为间接水击。

当水击压力足够大时，会使PVC-U管材发生脆性***，即使管材不发生***，当水击反生时，特别是频率较高时，在管内产生一个较大的内压力同时，对管子也施加了疲劳载荷。

4.抛摔的影响

在贮存、运输、安装PVC-U管材时，对管材的抛摔会使管材发生细小的裂缝或缺陷，根据脆性***的裂缝理论，在此处易发生应力集中而导致管材的脆性***。