FWIC ST-0155 ULFM Underground Indicator Post, Indicator posts provide the reliable way of operating a buried or inaccessible gate valve for opening and closing purposes. Field Adjustment: Remove the top section from the top of the indicator post assembly. Cut the required length off the bottom of the standpipe for the ground Line to match up with standpipe ground line mark. Set the ?OPEN? and ?SHUT? targets for the appropriate valve size. Reattach the top section to the top of the indicator post assembly. Design and dimensions are subject to change without notice.