FeaturesMaximum temperature rating 260°F at 150 psi300 psi non-shock cold working pressureDezincification resistantLead-freeDisc Seat - PTFEEPDM O-RingSolder ends per ASME B16.22Third-party certified to NSF/ANSI 61 and 372Size 1-1/4"NIBCO makes it easy to balance plumbing systems with 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.NIBCO makes it easy to balance plumbing systems with new lead-free and dezincification-resistant FLO-BOSS manual balancing valves. Direct system readings are taken across the orifice, with no special calculators or meters required. The FLO-BOSS 1810 Series fixed orifice manual balancing valves are complete with integral pressure temperature ports and memory stop. The FLO-BOSS 1810 Series provides 1440-degree of throttling adjustment, resulting in precise setting of system flow and is also capable of providing system isolation for maintenance with an integral memory stop feature, allowing the system to be returned to its retained settings once maintenance is completed. The FLO-BOSS lead-free manual balancing valves provide the ultimate solution for a wide range of application requirements to ensure a balanced plumbing system.