Mueller Co A-20806-1044LWA Adjustable Vertical Fire Protection Indicator Post, Size A, 17.25 to 39.25 in

Mueller Co Fire Protection Indicator Post, Adjustable Vertical, Size A, 17.25 to 39.25 in Range

Vertical indicator posts are designed to operate non-rising stem (inside screw) gate valves, which are used to control an underground water supply to automatic sprinkler, water spray deluge, foam-water deluge or standpipe fire protection systems. They permit operation of underground valves while providing an above ground visual indication as to whether the valves are open or shut, in addition to a means for locking the valves in a particular position. Indicator posts provide for valve operation from outside of the protected property and, therefore, the opportunity for more prompt valve operation in an emergency situation. Model A-20806/A-20807 indicator posts feature a telescoping Stem that can be adjusted to its final position without field cutting of the Stem. The telescoping Stem also permits: easier setting of the inOPEN in and inSHUT in target plates, easier adjustment of the post length during the initial installation and ready re-adjustment of the post length, if there is a modification in the location of the final grade.