my .02.. pex is good,it does have the rather unique ability to freeze without splitting,BUT,(there always is one isnt there),if it freezes it cant be thawed either. Any non conductive pipe would have this problem of course.If this section of pipe freezing was a cronic every winter problem,and you didnt go to the trouble of correcting it properly, or couldnt get by without water in those places until it naturally unfroze,i would suggest going back with galvanized.Simply because its easiest to unthaw.If this was only something that happened once every few years ,and you could do without it for the time needed to unthaw pex would be a real asset.Obvious solution would be to replace it correctly of course...heres a tip ,that may swing you over to pex if you need to replace a line under a lot of obstructions.simply cut your galv and rethread it on each side of your drive or whatever. couple your quest unto one end and your tractor on the other of the galv and simply pull it through as you pull old pipe out.galv is quite a bit larger diameter than pex and it will follow it right in.whole lot faster/cheaper than boring under.of course it wont cure your freezing problem but if you have a leak under concrete its a good thing to know. About the only way to get it deeper under an obstruction without tearing it out is boring,and the machines can be rented cheply lots of places.its not hard to do unless your in rock ,but you generally do need a fairly large hole on each side to work in.so it requires extra digging.one last little word of caution though,if you DO decide to pull a pipe in,stay away from the end of that old pipe until it starts moving!it will spear you if it breaks loose suddenly!i realized this was a good plan as soon as i woke up with no front teeth when i was pulling a gas line into a basement under a sidewalk!LOL
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Today's Featured Article - Fasteners: The Nuts and Bolts of Nuts and Bolts - by Curtis Von Fange. The nuts and bolts of nuts and bolts is an interesting and essential piece of knowledge that applies to our older tractors. An improperly torqued capscrew on an engine head or a shear bolt that is too hard on the driving shaft of a bushog can create havoc and make an expensive and uncalled for repair. Let’s examine the purpose and design of these fasteners in order to ensure their proper use. Fasteners are probably one of the aspects of mechanics that is given the least amount of thought.
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