NEWS

The main key points are as follows:

1. Material Selection: Materials must be corrosion-resistant to seawater, pressure-resistant, and wear-resistant. Commonly used materials include EPDM (for freshwater), NBR (for oil products), PTFE (for chemicals), and special fluororubbers, while metal valve seats often use stainless steel or alloys.

2. Structural Types: Primarily divided into soft sealing (rubber or plastic lining, offering good sealing and lower cost) and metal sealing (for high-temperature and high-pressure conditions). Elastic valve seats can compensate for wear and extend service life.

3. Key Characteristics: Must meet fire safety requirements for marine operating conditions compliance with ISO 10497 standards, vibration resistance, and long-term reliability. Bidirectional sealing design ensures no backflow of the medium.

4. Installation and Maintenance: The valve seat is press-fitted or bonded into the valve body, requiring precise alignment during installation. Regular inspections for wear and corrosion are necessary to avoid damage to the sealing surface.

The performance of the valve seat directly determines the sealing grade and service life of the valve in marine piping systems. Selection must consider the medium, pressure, and environmental requirements comprehensively.

Material and Application Medium

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