Pipeline systems for pumping (transporting) liquid or gas for certain types of technological systems are equipped with special devices:
- Excluding possible back movement of the workflow.
- Shut off the pipeline when the pressure of the working medium decreases or increases to critical parameters.
These devices are stainless check valves , which act as emergency shut-off valves. It is the use of stainless steel grades that allows these valves to be used directly in a working liquid or gas environment. Immunity to corrosion, chemically active media and temperature extremes significantly increases their service life and the tightness of the pipeline shutoff.
The main types of check valves
Depending on the specifics of the pipeline system and its purpose (the type of pumped working fluid or gas), through technical calculations, the required type of check valve is selected. The most popular and common ones include:
- Coupling valves - equipped with an internal thread for installation as an insert between the pipes of the system.
- Wafer valves - Installed directly into the cavity of a pipeline or connecting flange.
Quite simple valve systems, which come in a spool or slam-shut format to shut off the flow of the disc, have proven themselves to be used in pipelines for a wide variety of purposes, regardless of the pipe diameter.
You can get more complete information on the types and technical parameters of stainless steel pipeline check valves using the official website of the company that supplies this type of components to the domestic market directly from manufacturers. The locking equipment presented in the online catalog of the resource fully corresponds to the declared characteristics in terms of dimensions and permissible load during operation.
