A. Any water in ANY brand of faucet (even if the walls are many times as thick as what we offer) will break if subjected to freezing conditions. The strength of water expanding during freezing is much greater than any valve costing less than many thousands of dollars. If you plumb the freeze-proof hosebibbs so that water will/can drain out of them (install horizontally or down, not facing up) after you shut off the faucet then they will not break during a freeze. Do recognize that the inner end (the part in the wall) of those freeze-proof hosebibbs must be protected from freezing. Our standard vacuum breakers shown can break during a freeze.