Did they tell you what psi of water pressure they will be supplying?
I have 75 psi and no pressure reducing valve or expansion tank. On the low end of our water system the psi is 125 everybody has expansion tanks. Everybody has dual check valves at the meters also.
http://www.garagejournal.com/forum/showthread.php?t=213614
here is a link to my 26' wide pole building. You can put 3 cars in it but your not gonna open the doors.
Use an air compressor. Blow air into the hole for the brake line while your holding the piston over the hole..
sometimes you have to wiggle the piston a bit to get it to jump over the piston.