Sanitary yard hydrant

A sanitary yard hydrant, comprising:

• a vertical elongated fluid conduit having a lower portion adapted for installation underground, said lower portion having upper and lower ends;
• a valve means in said conduit adjacent the upper end of said lower portion to control flow of fluid through said conduit;
• a plunger extending downwardly in said conduit for opening and closing said valve means;
• a fluid reservoir surround the lower portion of said conduit and extending from said valve means downwardly to the lower end of said conduit;
• a drain port in said valve means for draining fluid from said conduit above said vale means when said valve means is closed;
• said fluid reservoir in communication with said drain port of said valve means;
• a venturi passageway located at the lower end of said lower portion of said conduit;
• a second fluid conduit secured to said venture passageway and communication with said reservoir, and
• a check valve means in said second fluid conduit to permit fluid to flow from said reservoir into said second fluid conduit, but to prevent fluid from flowing into said reservoir from said second fluid conduit,
• whereby fluid in said reservoir may flow by gravity and venturi action downwardly through said second conduit towards said venturi passageway when the fluid level in said reservoir is above the uppermost end of said second passageway, during the time when said valve means is open and the drain port is closed by said valve means, and fluid is flowing upwardly through said venturi passageway;
• and whereby said check valve means will close to prevent fluid flow from said venturi passageway into said fluid reservoir through said second conduit when the fluid level in said reservoir is below the uppermost end of said second passageway regardless of the position of the valve means.