NIBCO makes it easy to balance plumbing systems with our new lead-free and dezincification-resistant manual balancing valves. Our lead-free FLO-BOSS 1810 Series fixed orifice manual balancing valves are faster and easier to set because they do not require any special calculators or meters. Integral pressure temperature ports provide a direct readout across the orifice; optimum flow is quickly and accurately determined by simply measuring the differential pressure. The NIBCO FLO-BOSS solder end fixed orifice manual balancing valves also provide an isolation function for system maintenance, with an integral memory stop feature allowing the system to be returned to its retained settings once maintenance is complete.