I'm replacing the shower mixing valve in my guest bathroom during renovation as the old one had a good deal of surface rust. This is my first time soldering pipes together.
I mounted the new valve to a 2x4 laid flat between the two studs that the valve sits between, as instructed. I placed a similarly-mounted 2x4 about 36" above the mixing valve so that I could mount the shower arm. The way the valve is designed, however, forces me to apply a slight bending force in the length of pipe that traverses the distance between the mixing valve and the shower arm in order to get the shower arm mounting elbow screwed to the 2x4. The reason for this is the fact that the outlet in the mixing valve juts further out than the inlet of the shower arm mounting elbow when the mounting elbow is mounted to the top 2x4.
That length of pipe is soldered to both the shower valve and the shower arm mounting elbow. I used enough flux and got two nice solder joints, no leaks. I've had it like this for a few days, and no leaks have sprung up. The bending force I've applied is not excessive. I may have had to use three to five lbs of force to push the shower arm mounting elbow onto the 2x4 so I could attach it with screws.
Do I have anything to worry about? Will the constant torque applied to the pipe, and ultimately the solder joints, cause leaks in the future?