Check valves are not suitable for all types of systems. The main function of a check valve is to prevent the backflow of the medium. It is suitable for various occasions that require one-way flow, but its applicability is limited by many factors.
Scope of application
Lift check valve: Suitable for low pressure and medium and small flow occasions, usually used in general water treatment systems.
Swing check valve: Suitable for medium and high pressure and large flow systems, often used in pumping stations and large water treatment facilities.
Butterfly check valve: Suitable for occasions with limited space or requiring fast opening and closing, usually used in occasions requiring fast switching.
Diaphragm check valve: Suitable for occasions with corrosive or viscous media, usually installed on pipes prone to water hammer.
Applicable conditions
Fluid resistance: Different types of check valves have different fluid resistances. When selecting, you should choose a type with less resistance according to system requirements. For example, a swing check valve has a lower fluid resistance and is suitable for large flow systems.
Media characteristics: For corrosive or viscous media, diaphragm check valves are more suitable due to their good sealing and corrosion resistance.
Installation space: Butterfly check valves have a simple structure and low flow resistance, and are suitable for occasions with limited space.
In summary, when selecting a check valve, it is necessary to select the appropriate type based on the specific needs and conditions of the system to ensure optimal performance and long-term stability.