Thank you very much. 43:41 onwards is not explained well in many textbooks (or outright ignored) when describing the method behind system curve calculation. I guess most books assume the pipe is pressurised and in steady state when explaining static head. Great video.

Great Video Guys explained things very clearly and simply. I have just set up some bookmarks for future reference. 17:46 HGL on line with High Point 20:23 Siphon about to be setup 25:00 Pressure below zero as HGL below pipe line 26:06 Pump Booster of HGL 26:33 The Monster Transients from Siphon 29:45 Pumping against Siphon 30:00 HGL example with negative pressure and pipe collapse 32:00 Air Break Valve Operation 34:32 Air Break Valve 41:51 Cannot relie on Siphon being their 43:00 Questions - Transition from pressure to gravity flow 47:53 commonly called "Flow Away"

This presentation was seriously great.

Thank you for a very interesting webinar! Would it be possible to direct me to some literature for further reading? Kind regards, Lars

QUESTION: when the tube or Pipe, is large enough to overcome capillary action; would the flow after the first peak simply drain through the bubble by gravity? Therefore allowing at least a minimum flow around the bubble?

1. Are syphon's are used in network system to increase the pressure? 2. Does these vacuum pressure values can be used in sewer network?