The NIBCO® indicator post is a wall type for operating non-rising stem gate valves. Indicators posts display the disposition (open/shut) of the gate valve behind a wall from a distance and are required on NRS gate valves in sprinkler service. These posts 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.