The freeze less model 17 is designed and intended for year-round residential irrigation purposes regardless of outside temperature. This faucet will not rupture from freezing when the valve is shut off and the hose is removed. The model 17 contains an integral backflow protection device which protects up to 125 PSI of backpressure and therefore does not require and add-on vacuum breaker. Faucet will not rupture from freezing when the valve is shut off and the hose is removed (hose sold separeately)Anti-siphon backflow protectionPowder-coated die-cast aluminum round handle for strengthStainless steel seat to prevent from leaking at the back of the faucetFull-circle operating threads cover the valve body and retainer for a secure and tight fitRepair parts readily available