NIBCO makes it easy to balance mechanical and plumbing systems with our new lead-free and dezincification-resistant manual balancing valve. Our lead-free 1805 Series fixed orifice manual balancing valve is faster and easier to set because it does 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 1805 manual balancing valves are equipped with a union end that will provide up to a double reduction in inlet connecti