At home I opened up the wall and have to cut the copper pipes (hot and cold) with tube cutters to reroute them and reconnect them to new copper pipes. If I am not to do soldering, are compression fittings connections work just as good and reliable as soldering?
NPT is a pipe thread. Threads on pipe have an OD to suit the pipe, the size of which is its nominal bore. 1/4 pipe has an approximate OD of 1/2, therefore. When used on pipe, the die cuts a tapered thread, not parallel. The mating tap, therefore, is approx. 1/2 OD. They are available in both taper and parallel threads. 1/4 UNF is 1/4 outside diameter. It is a screw thread. So of course it only talks of pitch and depth, the OD is 1/4! You don't tap pipes. You only tap pipe FITTINGS. As above, if the OD of the UNF is 1/4, there is NO WAY you could tap ANY hole that is 1/2 or 1 diameter, and never in a pipe.
You have a lot of options. - Reflective safety vest or other clothes a jogger would wear. - Bike safety flag - Bike, car, or other reflectors or better yet, LED lights - Reflective safety tape Try to accomplish several things - Get something bright that can be seen from all angles up at the height of the typical driver (bike safety flag and/or small strobe on a pole) - Large area of light or reflective colors (white T-shirt or vest over your clothes) - Safety reflectors on all sides, ideally that move or jiggle a little (self-adhesive tape on all sides) - Actual lights when possible. (Small LED lights are available at most automotive stores). You can also consider a Slow Moving Vehicle sign on back.
