Patent ID: 8991415
Filing Date: 2015-03-31
Classification: E03B,Y10T

Abstract:
1. A fire hydrant break off riser, comprising: a riser body comprising: a valve including an upward facing circumferential valve seat adapted to seat against the tapered seat in the riser body; at least one pivot axle pivotally connecting the valve to the riser body, the at least one pivot axle residing laterally offset on an axle side of the valve between a center of the valve and an edge of the valve; at least part of the trigger pocket is formed by a break away portion; and a diagonal trigger residing in the trigger pocket at a second end, and pivotally attached to the valve at a first end, the first end opposite to the second end, wherein; the valve is held in an open position by the diagonal trigger while the second end of the diagonal trigger is restrained by the trigger pocket during normal operation; and when the break away portion breaks away, the diagonal trigger is released from the trigger pocket, the valve pivots to a closed position, and the upward facing valve seat is forced against the downward facing tapered seat by water pressure.