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Cast Steel Class600 Peek Seat TOP Trunnion Ball Valve

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Cast Steel Class 600 PEEK Seat TOP Trunnion Ball Valve is a high-performance cast steel ball valve, specially designed to meet the working conditions of high pressure, high temperature and high wear resistance. This valve adopts a top inlet structure and is equipped with a PEEK (polyetheretherketone) material valve seat, featuring outstanding sealing performance and durability. It is widely used in industries such as petroleum, chemical engineering, and natural gas.
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Main Features

  • High-Strength Cast Steel Body: The valve body is made of high-quality cast steel (e.g., ASTM A216 WCB), featuring high strength and good corrosion resistance. It can withstand the high pressure rating of Class 600, ensuring stability and reliability under harsh working conditions.

  • PEEK Valve Seat: The valve seat made of PEEK material offers excellent high-temperature resistance, chemical corrosion resistance, and wear resistance, maintaining good sealing performance even under extreme working conditions.

  • Top Entry Design: The TOP Trunnion design facilitates easier maintenance and inspection of the valve. Internal components can be replaced without removing the entire valve from the pipeline.

  • Double Block and Bleed Function: Equipped with the Double Block and Bleed (DBB) function, it can block upstream and downstream fluids when the valve is closed, and safely release the pressure in the cavity through the bleed port.

  • Fire-Safe Design: Compliant with the fire safety standards of API 607 or API 6FA, it can maintain sealing integrity even in extreme situations such as fires.

  • Anti-Static Device: Equipped with an anti-static device to prevent static accumulation, reducing the risk of fire and explosion.

  • Low Fugitive Emission: Through precisely machined sealing surfaces and a double-seal design (e.g., O-rings and graphite gaskets), it ensures low fugitive emissions, meeting strict environmental regulations.

Technical Parameters

  • Nominal Diameter: Multiple sizes available, typically ranging from 2 inches to 24 inches.

  • Pressure Rating: Class 600.

  • Applicable Temperature Range: Based on the performance of the PEEK valve seat, it is generally suitable for -40°C to 250°C.

  • Connection Type: Flange connection, compliant with ASME B16.5 standards.

  • Operation Mode: Manual operation or equipped with an actuator for automatic control.


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