SD (Self Draining) - Faucets with this feature automatically drain water from the valve once it's turned off to help prevent freezing.
PRV (Pressure Relief Valve) - This faucet includes a pressure relief valve stem to help prevent freezing.
VB (Internal Anti Siphon Vacuum Breaker) - Faucets with this feature have an integral anti-siphon vacuum breaker.
SCVB (Single Check Vacuum Breaker) - Faucets with this feature come with a removable external single check vacuum breaker.
DCVB (Double Check Vacuum Breaker) - Faucets with this feature come with a removable external double check vacuum breaker that is suitable for installations in areas prone to freezing.
VR (Vandal Resistant - Tee Key Available) - Faucets with this optional feature are often selected for areas where the installer prefers to have more control over who accesses the faucet.
H/C (Hot/Cold) - Faucets with this option have handles marked hot and cold and two incoming supply lines (hot and cold).