valve seat

The valve seat is a detachable surface component in a valve, used to support the fully closed position of the valve core and form a sealing pair. The general valve seat diameter is the flow diameter of the valve. For example, butterfly valves have a wide range of seat materials, including various rubber, plastic, and metal materials.

The material characteristics that should be considered in valve seat selection include

1. Fluid compatibility, including expansion, hardness loss, permeability, and degradation;

2. Hardness;

3. Recovery degree after load elimination;

4. Tensile strength and compressive strength;

5. Deformation before rupture;

6. Elastic modulus.