Enhanced backflow prevention apparatus and method

摘要: A backflow prevention apparatus and method are provided for use in irrigation systems. An anti-siphoning device may have a housing, plunger, plunger retainer, cap. The housing has inlet outlet channels formed therein, with the channel running through interior of channel. generally annular shape is disposed to block water flow from into channel, but allow When closed, permits air cap, central opening plunger. an elastomeric exterior provide more effective seal between