Sealing problem of fluorine lined check valve

    check valve The sealing performance is crucial, as poor sealing performance can lead to leakage and affect operational efficiency. So what are the factors that cause sealing performance issues with fluorine lined check valves? Below we will introduce them one by one.
There are many factors that affect the sealing problem of fluorine lined check valves, and they are also complex. The specific introduction is as follows:
1. Physical properties of the medium
Mainly including viscosity, temperature, and hydrophilicity. Among them, viscosity is related to the permeability of the sealing fluid. Viscosity is also related to temperature. The viscosity of gases increases with temperature, while the viscosity of liquids is the opposite. The influence of the hydrophilicity of the contact surface on leakage is caused by the capillary pore characteristics.

2. Sealing pressure ratio
It is determined by the pressure difference before and after the fluorine lined check valve and the external seal. Under the same conditions, if the sealing ratio is small, it is easy to leak, and if it is too large, it is easy to damage.
3. Sealing secondary structure
Under the action of sealing force or temperature changes, the size of the structure will change, altering the interaction force between the sealing pairs and reducing the sealing performance. Therefore, sealing pairs are generally chosen to have elastic deformation.
4. Sealing secondary quality
Mainly including material selection, matching, and manufacturing accuracy.