Here is a link for everyone to read…
I’m more inclined to say there is no valves in the veins, but a type of valve action that happens when we become aroused! The smooth fibrous muscle on the inside of the penis becomes relaxed and constricts the out flow of blood, not stop it! Then the arteries starts to open more to allow the blood to flow in filling the penis. This may explain why we may become more rigid after months of pe. The smooth muscle in the penis becomes stronger and larger from stretching, thus placing a more forceful clamp on the out flow of blood when relaxed.
Now lets look at it this way, you have a vein running through a fibrous muscle that is relaxed, not constricted, and the pressure increases as you jelq. That pressure would not be strong enough to enlarge the vein to damage that point of muscle where the veins exit because the muscle is in a relaxed state and would have some give, but the vein itself would be the weak link and bust from the pressure far before you exert enough force to expand it enough to damage that muscle IMO.
What may be happening with soft erections is the over extended workouts some do, or over doing it at the start may stresses or damage the nervous system that controls this function.
I say we stick together and find the answers we need without the cynical input of non believing doctors that are clueless and unwilling to debate their statements!
Modemmer.