The NIBCO® indicator post is an upright type for operating non-rising stem gate valves in buried service. Indicators posts display the disposition (open/shut) of the gate valve below from a distance and are required on NRS gate valves in buried sprinkler service. These posts feature height adjustability to varying bury depths. They are Underwriters Listed and FM Approved for fire protection systems. Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO® valve products for the most specified, versatile and economical option in commercial, mechanical, fire protection and industrial applications. NIBCO® pressure rated valves and accessories are backed by the NIBCO 5-year 125% limited warranty.