They attach to the end of the pipe section by means of circumferential grooves pressed (or Slice) round the finish of the pipe to get joined. They may be greatly used on greater steel pipes, and can even be utilised with other materials. Compression connections on drinking water shutoff valves http://angelowskbs.dsiblogger.com/17790671/an-unbiased-view-of-valves-and-fittings