The NIBCO® cast iron gate valve features a Class 125 mechanical joint end connection for easy installation and accessibility. These valves are Underwriters Listed and FM Approved for fire protection systems as system control valves. Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO® gate valves for the most specified, versatile and economical valve option in commercial, mechanical, fire protection andmore industrial applications. NIBCO® pressure rated valves are backed by the NIBCO 5-year 125% limited warranty. less