Valve Flange Connection

Flange connection

This is the most common form of connection used in valves. According to the shape of the joint surface, it can be divided into the following types:

1. Smooth type: used for valves with low pressure. Processing is more convenient

2. Concave-convex type: high working pressure, medium and hard washers can be used

3. Tongue and groove type: gaskets with larger plastic deformation can be used, which are widely used in corrosive media and have better sealing effect.

4. Trapezoidal groove type: use an oval metal ring as a washer, used for valves with a working pressure of ≥64 kg/cm2, or high temperature valves.

5. Lens type: The gasket is in the shape of a lens and is made of metal. Used for high pressure valves with working pressure ≥100 kg/cm², or high temperature valves.

6. O-ring type: This is a newer flange connection form, which is developed with the emergence of various rubber O-rings.