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I live near Las Vegas about 60 miles west approx 5000 feet, it gets pretty cold here at night somtimes in the low teens, thats why I have a split valve. I do have a green box, well 4 of them, all valves are in the off position, I had traced the main inlet sorce by digging up wifes flower bed, it goes under the street, which is paved. The main out near the road for my house when turned off does not stop this water in fact, by shutting off my entire water supply to my house my neighbors pipes broke in the same place as mine when I turned my house water back on, hers is worse, she had water shooting over her house. The neighbors werent home, but their water main outside did shut off her sprinkler system.. But mine is diffrent.. I cannot get anyone out here until wednessday.. The bright side of this is the neighbor kids can go ice skating in the mornings while its still freezing, In the meantime, I have this taped up with duct tape, and a couple shirts wrapped around that with more ductape.. Hopefully this will get me through somewhat until wednesday.. Until then I will continue digging up this system..