The lifting valve of the lifting type refers to the valve that automatically opens and closed the valve petals by flowing by the medium to prevent the medium, also known as the inverse valve, one -way valve, reverse flow valve, and back pressure valve.The stopper valve is an automatic valve, which is the main function of preventing the medium backflow, preventing pumps and driving motor reversal, and leakage of container media.
Lift -down stop valve model
First, the check valve (Checkvalve): 1. According to the structure, it can be divided into three types: lifting valve, rotating back valve, and butterfly stop valve.① The lifting valve can be divided into two types: vertical and horizontal.② The rotating backbone valve is divided into three types: single -petal, dual -petal and multi -petal.③ The butterfly stop valve is a direct way.The above -mentioned stop valve can be divided into three types: thread connection, flange connection and welding in the form of connection.
Lift -down stop valve installation
The main matters of the lifting valve installation of the lift and stopping valve should be installed correctly in accordance with relevant regulations when installation. Before installation, clean the valve should be cleaned, and it is necessary to ensure that no damage is received during transportation.If you store it for a long time, you must check the anti -rust.When installing, it is generally installed on a horizontal pipe, and the valve is covered up.After the installation is completed, carefully check the connection between the valve body and the valve cover, whether the nut is tightened, whether there is any damage on the flange, etc.
Principles of lifting valve
1. When the medium flows in accordance with the prescribed direction, the valve petals are affected by the aggressive quality. When the medium is turned on the inverse flow of the medium, due to the effects of the valve petals and the reverse force of the valve petals,Close and achieve the purpose of preventing the medium from current.

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