Check valves in different types
Since check valves are used in different types of industries they are manufactured in carbon steel, alloy steel or stainless steel. Depend on size it are necessary pieces in the piping. Although it are designed on the basic API 6D standard but, for different industries they are further customized according to API 608,609,602, or 600 criteria.
The most important criteria to be considered in installing valves in a piping is the cracking pressure. This is the pressure that opens the valves and thus choosing the right fit it for the piping is crucial. It are used where there is need to:
- Prevent the reverse flow of contents of fluids or gases present in the pipe
system.
- Shield the other components of pipeline from the damage by
blocking any back flow.
- Thwart the flow because of gravity or pressure
variations.