Arrowhead Brass 3/4" Hose Thread Back Flow Preventer. It is a non-anti-siphon vacuum breaker designed for use in non-freeze areas on hose bibbs, laundry tubs, and utility sinks. This vacuum breaker features a 5/8" hose thread and is lead-free.
WARNING: This product can expose you to chemicals including lead or lead compounds, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information regarding Prop 65, visit www.P65Warnings.ca.gov