Check valves are used where the backflow of fluid could upset the upstream process or damage equipment. For example, check valves are commonly used downstream of pumps and compressors to prevent fluid from flowing backward when the equipment is turned off. Check valves are also used when fluids from several different sources are mixed. A check valve installed upstream of the mixing point prevents the mixed fluid from backing up into the source piping. This course discusses the different types of check valves and their applications.
0.2 hr. Online Course