Abstract: An anti-syphon, frost-proof hydrant including a lower body having a fluid inlet, and a fluid outlet defined therein, with a valve seat provided within the outlet where standpipe enclosure member is provided and adapted to be secured to the lower body around the valve seat, to provide a fluid conduit, having and outlet end connected to an upper body having a fluid inlet communicating with the standpipe outlet and a fluid outlet, a valve operator carried by the upper body including a stem member extending downwardly through the upper member and the standpipe and adapted to carry a valve member on the end thereof disposed in aligned relation with the valve seat so the valve member outlet is open and closed by movement of the stem member and where an anti-syphon drain port is provided in the lower body member and adapted to receive an anti-syphon drain device including an enclosure defining a chamber, and adapted to be received in the port, where valve seat means are disposed within the chamber with valve means o