The NIBCO 1710 Series variable orifice manual balancing valve is dezincification-resistant and complete with integral pressure temperature ports and memory stop. The 1710 is also capable of providing system isolation for maintenance. The integral memory stop feature allows the system to be returned to its retained settings once maintenance is completed. NIBCO manual balancing valves provide the ultimate solution for a wide range of mechanical and HVAC chilled and hot water application requirements to ensure a balanced system and a comfortable indoor climate. Please refer to NIBCO technical data sheets, chemical resistance guides and catalogs for engineering and installation information. Choose NIBCO valves for the most specified, versatile and economical valve option in commercial, mechanical and industrial applications. NIBCO valves are backed by the NIBCO 5-year 125 Percent limited warranty.