Factors Affecting Sealing Performance of Concentric Soft Seal Butterfly Valves

Key Factors

• Seat Material Selection: EPDM for seawater, NBR for oil, VITON for high temperature.
• Machining Precision: Concentricity between valve body, disc, and seat.
• Installation Position: Horizontal installation is preferred over vertical to avoid self-weight affecting sealing.
• Torque Control: Excessive or insufficient torque may damage the seat.

Key Technical Points

• Ensure concentricityamong body, disc, and seat.
• Select suitable sealing materials.
• Prevent high-temperature aging of the seat.
• Apply anti-corrosion coatingsor linings to enhance seawater corrosion resistance.

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