Upgradeable Faucets to the Woodford PRV 

www.woodfordmfg... - Most Woodford residential wall faucets produced after 1962 (Model 14, 17 and 22 with round handles) are available for the Pressure Relief Valve (PRV) upgrade. The patented PRV that will prevent your faucet from bursting, if hose is inadvertently left connected during freezing conditions.
The faucet will be full of ice and faucet will not operate until thawing occurs, however, there will not be the cost and hassle of replacing a burst faucet.