1. Main functions
● Seal function: Interfaces with the valve disc to prevent fluid leakage (internal or external leakage).
● Support and direction: Some valve seat designs can guide the movement of the valve disc to ensure accurate alignment.
● Pressure and Corrosion Resistance: Withstands medium pressure, temperature, and chemical corrosion to maintain structural integrity.
2. Common Materials
● Metal materials: stainless steel, copper alloy, hard alloy (such as stellite alloy), suitable for high temperature and high pressure environments (such as power plants, petrochemicals).
● Non-metallic materials: PTFE (polytetrafluoroethylene), rubber, nylon, etc., used for corrosive environments or low-temperature, low-pressure scenes (e.g., chemical industry, water treatment).
● Composite materials: metal matrix non-metallic coating considering strength and sealing.
3. Structural type
● Fixed valve seat: integrated with the valve body or press-pressed, simple design (such as globe valve, gate valve).
● Replaceable valve seat: independent design, easy to repair (commonly used in ball valves and butterfly valves).
● Elastic valve seat: Use rubber or spring to improve the adaptability of the seal (such as a soft-seal butterflyer).
4. Application Scenarios
● Heavy-duty working conditions: high-pressure steam, corrosive chemicals, ultra-low temperature liquids, etc.
● Key systems: oil pipelines, cooling systems for nuclear power plants, fuel management in the aerospace industry.
Ball Valve Series
Butterfly Disc Valve Series
Slide Valve Series
Stainless Ball Valve Series
