Building code for sillcocks/hose bibs

[sphelps]

Anyone know if it's now code to use those frost free / anti-siphon POS hose bibs (sillcocks)? I have two on my house which were never even used before last weekend and both leak like crazy from the vent. I have to replace them and don't want to install the same thing, would rather install the old style bib with an extra shut off valve on the inside of the house for draining.