Apollo 920F Series Cast Iron Swing Check Valve, Class 250, Bronze Seat, 8" Flanged

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About Apollo 920F Series Cast Iron Swing Check

This class 250 Apollo 920F series swing check valve provides full flow capabilities, and can be installed in most plumbing and heating systems. The valve body and bolted bonnet are made of cast iron for compressive strength and resistance to wear, and its integral seat is made of bronze for higher strength and corrosion resistance. It has flanged end connections for bolting to American National Standards Institute (ANSI) 250# and 300# pipe flanges. The maximum cold working pressure (CWP) is 500 pounds per square inch (psi) at 100 degrees Fahrenheit, and the maximum steam pressure (SWP) is 250 psi at 406 degrees Fahrenheit. The working temperature range is -20 to 406 degrees Fahrenheit. This valve meets standards Manufacturers Standardization Society (MSS) SP 70, and American Society of Mechanical Engineers (ASME) B1.1 and B16.10 for quality assurance.Check valves have two ports and restrict the flow of fluids and other loose materials through a pipe or passageway to one direction. Flow enters through one port and exits through the other, closing when flow reverses or stops. Two common types of check valves are ball cone valves and swing check valves. A ball cone valve utilizes a spring-loaded ball seated against a cone-shaped interior surface to stop the flow of fluid in a forward direction, and a swing check valve has a movable disc on a hinge to block reverse flow. Check valves are rated by their cracking pressure (the minimum upstream pressure required for the valve to operate), and they are used in various water, gas, air, and steam lines.Apollo manufactures ball, mixing, and relief valves, actuators, water gauges, marine fittings, heating and plumbing products, and backflow prevention devices. The company, founded in 1928 and headquartered in Matthews, NC, meets International Organization for Standardization ISO/IEC 17025:2005 and makes products that meet ISO and American National Standards Institute (ANSI) standards.