Is this ID or AR or NCS?

[oldplumber]

[ame=http://www.youtube.com/watch?v=U01EK76Sy4A&feature=related]YouTube - CAN YOU DO THIS WITH YOUR TAP WATER?[/ame]

 

[LIFES A GAS]

I remember many year ago I was called to sort out a DIY outside tap installation, the guy (a policeman) had used one of those self cutting isolating valves which he had fitted to a gas pipe, great for getting the barbecue started I suppose!.
Martin.