The check valve is often used in a variety of equipment installations and pipelines for the purpose of preventing countercurrents, and the presence of it is guaranteed to be safe. At the same time a wide range of types of check valves are also very many, depending on the environment can choose the corresponding product. What are the types of check valves? The following let Xiaobian for everyone to introduce the different types of equipment on the specific content.

What are the types of check valves?


 

The first, swivel check valve

The swivel check valve is divided into a single flap with a flap and a multi-flap with multiple flaps. In addition to this also has a reduced diameter swivel check valve and full diameter swivel check valve classification. And is opened or closed by rotating the pins outside the valve seat.

Second, lift check valve

The lift check valve can only be mounted on a horizontal line, which moves mainly in the direction of the valve seat along the axis of the valve seat. The lift check valve is also dedicated to the bottom of the pump suction pipe, which is used to avoid the backflow of the medium when the pump is stopped and thus to maintain the water column required for suction.

Third, axial flow check valve

Axial flow check valve is developed in recent years, a new device, with some new forms of structure. The type of check valve can not only effectively reduce the water pressure, but also to protect the flow channel and make the flow resistance is small. With the lift-type check valve than its more advantages and the valve flap smaller, and make the effect of reducing the water pressure is particularly good.

Fourth, disc check valve

Disc check valve for the folder structure, while it also has a small size, light weight and strong sealing characteristics. Not only can be installed on the horizontal pipe, but also can be installed in the vertical pipe. At the same time this check valve for the two semi-circular disc plate with a pin fixed in the valve body, the pin has two torsion spring structure, and because the disc version installed in the valve body sealing surface, making the medium pressure Can be pushed by the spring-pressed disc version.

Fifth, pipe check valve

Pipeline check valve small size, light weight, good processing technology. As a valve that slides along the axis of the cylindrical body, its fluid resistance coefficient is slightly larger than the swivel check valve.

High quality and durable check valve has become our daily life can not be separated from a security device, from the above described four types of specific content is not difficult to find their own characteristics and advantages. In the process of making the purchase can be based on different temperatures and the type of media to select the above corresponding types of check valves, will produce better results.