ZF8006 Stainless Steel female thread swing check valve DN20

prevents the medium in the pipeline from flowing back. The valve whose opening and closing parts are opened or closed by the flow and force of the medium to prevent the medium from flowing back is called a check valve. Check valves belong to the category of automatic valves, which are mainly used in pipelines where the medium flows in one direction, and only allow the medium to flow in one direction to prevent accidents. This type of valve should generally be installed horizontally in the pipeline. The swing check valve adopts a built-in rocker swing structure. All the opening and closing parts of the valve are installed inside the valve body and do not penetrate the valve body. Except for the sealing gasket and sealing ring at the middle flange, the whole There is no leakage point, preventing the possibility of valve leakage. The connection between the swing arm of the swing check valve and the valve clack adopts a spherical connection structure, so that the valve clack has a certain degree of freedom within the range of 360 degrees, and there is an appropriate trace position compensation. Swing check valves have been widely used in many fields such as chemical industry, metallurgy, and pharmaceuticals.

The structure and characteristics of the check valve:

1. Exquisite selection of check valve materials, in line with relevant domestic and foreign standards, and high overall quality of materials.

2. The sealing pair of the check valve is advanced and reasonable. The sealing surface of the valve clack and the valve seat is made of iron-based alloy or stellite cobalt-based cemented carbide surfacing surface, which has wear resistance, high temperature resistance, corrosion resistance and scratch resistance. Good and long service life.

3. The check valve is designed and manufactured according to the national standard GB/T12235.

4. The check valve can adopt various piping flange standards and flange sealing types to meet various engineering needs and user requirements.

5. The valve body material of the check valve is complete, and the gasket can be reasonably selected according to the actual working conditions or user requirements, and can be suitable for various pressure, temperature and medium working conditions. According to user requirements, check valves with different structures and connections can be designed and manufactured for use with various equipment.

Check valve refers to the valve that automatically opens and closes the disc depending on the flow of the medium itself, and is used to prevent the medium from flowing back. It is also called check valve, one-way valve, reverse flow valve, and back pressure valve. Check valve is a kind of automatic valve, its main function is to prevent the back flow of the medium, prevent the pump and drive motor from reversing, as well as the release of the container medium. Check valves can also be used to supply pipelines for auxiliary systems where the pressure may rise above the system pressure. Check valves can be mainly divided into swing check valves and lift check valves. The check valve is suitable for pipelines of various working conditions in the petroleum, chemical, pharmaceutical, fertilizer, and electric power industries with a pressure of PN1.6~16.0MPa and a working temperature of -29~+550°. The applicable medium is water, oil, steam, Acidic medium, etc.

Check valve is automatically opened and closed by the force generated by the flow of the medium itself in the pipeline, and belongs to an automatic valve. The check valve is used in the piping system, and its main function is to prevent the medium from flowing back, to prevent the pump and its drive motor from reversing, and to discharge the medium in the container. The check valve can also be used to supply pipelines where the pressure of the auxiliary system may rise above the pressure of the main system. The function of the check valve is to prevent the medium in the pipeline from flowing back. Check valves belong to the category of automatic valves, which open or close automatically by the force of the flowing medium. The check valve is only used in the pipeline where the medium flows in one direction to prevent the medium from returning to prevent accidents. The applicable medium of the check valve is water, oil, steam, acid medium, etc.