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					Originally Posted by afc wimbledon  The valve is on my property and my responsibilty in Vancouver, I know I had to replace it, its unlikely to fail as its a huge brass ball valve anyway, theres no screw thread just a rotating hole, the pipes fittings either side though are the weakness, | 
	
 
I wonder if the depth of the water main would make any difference between Calgary and Vancouver rules, longer header... more risk? I don't know.
I know the Lower Mainland water mains are significantly less deep than Calgary.