What are Check Valves? Types of Check Valves & Their Symbols
What are Check Valves? Types of Check Valves & Their Symbols Written by Anup Kumar Dey in Piping Design Basics Check valves are essential components in fluid control systems. They play a crucial role in preventing the reverse flow of fluids within pipelines or piping systems. Check valves are popular as non-return valves or one-way valves. This comprehensive guide aims to provide a deep understanding of check valves, covering their types, working principles, applications, design considerations, maintenance, and common questions related to these vital components. What is a Check Valve? A Check valve is a mechanical device used in piping and pipeline systems to prevent back-flow. Check valves allow fluid flow only in the forward direction that’s why it is called a one-way valve or non-return valve . They work on the principle of differential pressure. It means the check valve will only open if the upstream pressure is more than the downstream pressure. ...