Nibco manufactures bronze, cast iron and ductile iron check valves. Bronze types feature horizontal swing, inline lift and bolted bonnet configurations with pressure ratings ranging from 125 PSI/8.6 Bar to 300 PSI/20.7 Bar. There are nearly 10 models to choose from. Typical services include hot and cold water, HVAC, steam, compressed air and gas. There are also nearly 10 models of cast iron check valves available with pressure ratings from 125 PSI/8.6 Bar to 250 PSI/17.2 Bar.