Product Description

The Check Valve, also known as the check valve, check valve, return valve or isolation valve, is an automatic valve whose main function is to prevent the backflow of media. The working principle is that under the action of fluid pressure flowing in one direction, the valve disc opens; When the fluid flows in the opposite direction, the valve disc is closed by the fluid pressure and the dead weight of the valve disc, thus cutting off the flow. The following is a detailed description of the check valve:

Type and structure

Check Valve is divided into the following types according to its structure:

Swing check valve: the disc is disc-shaped and rotates around the rotating shaft of the seat channel. Because the channel in the valve is streamlined, the flow resistance is relatively small, and it is suitable for large diameter occasions with low flow rate and small flow change. But its sealing performance is not as good as the lift check valve.

Lift check valve: The disc slides along the vertical center line of the body. This type of check valve can only be installed on the horizontal pipe, suitable for high pressure small diameter occasions. The shape of the valve body is similar to that of the globe valve, and the fluid resistance coefficient is larger.

Butterfly check valve: The disc rotates around the pin in the seat. This type of check valve has a simple structure, but poor sealing, and usually can only be installed on horizontal pipes.

Pipe check valve: The valve disc slides along the center line of the body, is a new type of valve, small size, light weight, but the fluid resistance coefficient is slightly greater than the swing check valve.

As an important part of the fluid control equipment, the Check Valve plays a key role in a variety of operating conditions. Its selection and use should be comprehensively considered according to specific working conditions to ensure the stability and reliability of the system.

Product Pictures

Product characteristics

The Check Valve is a device that prevents the backflow of fluid. The main features include:

Prevent backflow: Automatically prevent the reverse flow of fluid and protect the system equipment.

Unidirectional flow: Ensures fluid flows in only one direction, improving system efficiency.

Simple design: The structure is usually relatively simple and easy to maintain.

It is suitable for various application scenarios that need to prevent fluid backflow.

Factory scene