Titanium Valve Seat Gr12 ASTM B348 The Private Ordering Titanium Rings

The valve seat is a detachable part inside the valve, which is used to support the valve core's full clearance and form a sealing pair. Generally, the valve seat diameter is the maximum flow diameter of the valve. For example, the valve seat materials of butterfly valves are very wide, and all kinds of rubber, plastic and metal materials can be used as valve seat materials.
The valve seat uses elastic sealing material and small actuating mechanism to obtain the bubble tight level seal. The compression seat sealing stress causes the material to be elastically deformed and squeezed into the rough surface of the metal parts to be used to block all the leakage paths. The permeability of the material is the basis for a small amount of leakage to the fluid.
Materials are too soft, or cold deformation (creep) occurs under load. They can be filled with filler, such as glass fiber, to harden them. If it is used to make thin sheets, it can still meet the requirements of use and eliminate cold deformation or permanent deformation.
The seal must be carefully fixed to prevent rupture and air leakage due to differential pressure. Soft valve seat bonding to metal parts is a method, but it can not completely solve the problem, because the bonding will break and fail when subjected to thermal shock. A sufficiently large pressure drop will destroy the bonding material.

Characteristic:
1) Good fluid compatibility, including expansion, hardness loss, permeability and degradation;
2) High hardness;
3) Permanent deformation;
4) The degree of recovery after load removal;
5) Pulping and compression strength;
6) Deformation before fracture;
7) Elastic modulus.