Check Valve Types, Function, Installation

A check valve is a type of valve that utilizes circular discs as its opening and closing mechanism. It works by relying on the weight of the discs and the pressure of the medium to prevent the backflow of the material.

Types

The different types of check valves include swing check valves, lift check valves, disc check valves, pipeline check valves, and compression check valves. Each type of valve serves a specific purpose in regulating the flow of fluids or gases. Swing check valves utilize a swinging disc to prevent backflow and maintain a one-way flow. Lift check valves have a piston-like disc that lifts to allow flow in one direction and closes to prevent backflow. Disc check valves have a disc that opens and closes based on the flow pressure. Pipeline check valves are designed for use in pipelines to prevent reverse flow. Compression check valves use a compression spring to regulate the flow direction and prevent backflow. These various types of check valves offer versatile solutions for different applications.

Function

Preventing the flow of medium in the opposite direction is one of the functions it can perform.

Preventing the pump and motor from reversing prematurely is a key benefit that can be achieved.

The containment of the medium can be achieved with it, thus preventing any release.

Installation

To prevent the reverse flow of the medium in the pipeline, it is important to include check valves in both the equipment and pipelines.

Check valves are suitable for use with clean media, but they are not recommended for media that contain solid particles or have high viscosity.

The lift type offers superior airtightness and enhanced resistance to fluids compared to the swing type. As a result, it is recommended to install the straight type on horizontal pipes and the vertical type on vertical pipes. By following these guidelines, optimal performance and functionality can be achieved.

When it comes to straight-through type pipes, they are quite versatile in terms of installation. Whether you want to install them horizontally or vertically, there aren't many limitations to worry about. So, you can choose the placement that works best for your needs and preferences without hassle.

The installation of a swing type valve is not limited and can be installed in various orientations, including horizontal, vertical, and inclined pipelines. However, it is important to ensure that when installed on a vertical pipeline, the flow direction of the medium is maintained from bottom to top. This allows for efficient operation of the valve.