Introduction
Check valves are used in piping systems to prevent reverse flow of fluids.
Short Answer
A check valve is a valve that allows fluid to flow in one direction and automatically prevents reverse flow.
Explanation
In many piping systems, reverse flow can damage pumps, compressors, or other equipment.
Check valves automatically close when flow attempts to reverse direction.
Common types of check valves include swing check valves, lift check valves, and wafer check valves.
Engineering Practice
Engineers install check valves downstream of pumps and compressors to protect equipment.
Proper check valve selection depends on flow conditions, pressure rating, and piping layout.
Conclusion
Check valves protect piping systems and equipment by preventing reverse flow and maintaining proper fluid direction.
