Overview and Application
Pressure self-sealing cast steel check valve, the opening and closing parts open or close by themselves depending on the flow and force of the medium to prevent the medium from flowing back. Check valves are automatic valves and are mainly used on pipelines with one-way flow of media. They only allow the medium to flow in one direction to prevent accidents.
① The self-sealing check valve uses self-sealing as the high-pressure sealing technology. Under the premise that the pressure does not exceed the compressive strength of the pressure-bearing parts, the greater the pressure, the better the sealing performance.
② Swing check valve is also called swing check valve or swing check valve. The opening and closing parts open or close by themselves depending on the flow of the medium and gravity. Its function is to prevent the backflow of the medium in the pipeline.
③ Swing check valves are automatic valves and are mainly used on pipelines with one-way flow of media. They are only allowed to be installed horizontally.
④ Suitable for clean media, not suitable for media containing solid particles and high viscosity.
⑤The materials of main body, internal parts, gaskets and fasteners can be reasonably combined according to user requirements or actual working conditions.
⑥ Mainly used in petroleum, chemical, pharmaceutical, fertilizer, electric power and other pipelines.
Design and manufacturing standards:
Design standards: API600, ASME B16.34
Structural length dimensions: ASME B16.10
End flange size: ASME B16.5
Butt weld end size: ASME B16.25
Shell thickness: API600, BS 1868
