| 摘要 |
<p>A frost-resistant hydrant includes a conduit or body tube (42') connected with a fluid source, a valve (58'), an actuator stem (300) connected with the valve, and a flow-through stem defined by a fluid passage through the valve and the actuator stem. The valve preferably includes a ceramic disk stack rotatable between an open position and a closed position. A combination back-flow preventer and vacuum breaker is positioned in the flow-through stem. The actuator stem (300) has a rotation limit enabling the valve to move between fully open and closed positions within 90 degrees. A cartridge body (52') incorporating the valve (58') includes an anti-rotation key engaging the conduit and fixing the rotational position of the valve cartridge (52') relative to the conduit (42').</p> |
