The Two-Piece Trunnion Ball Valve is designed for demanding pipeline applications that require reliable sealing, stable operation, and low operating torque under medium- and high-pressure conditions.<\/p>\n
Unlike floating ball valves, the ball in a trunnion-mounted ball valve is mechanically supported by upper and lower trunnions, allowing the seats to move toward the ball for sealing. This structure reduces seat load, improves operating stability, and makes the valve suitable for larger sizes, higher pressure ratings, and more demanding industrial service.<\/p>\n
Raymon Two-Piece Trunnion Ball Valves are commonly used in oil and gas pipelines, natural gas transmission, petrochemical plants, power plants, and other industrial systems requiring dependable shut-off performance.<\/p>\n
\u2022 Two-piece body construction for strong and stable valve structure
\n\u2022 Trunnion-mounted ball design for reduced operating torque
\n\u2022 Suitable for medium- and high-pressure pipeline systems
\n\u2022 Spring-loaded seats for reliable sealing performance
\n\u2022 Double block and bleed configuration available
\n\u2022 Anti-static and fire-safe design options available
\n\u2022 Available in flanged, butt weld, and customized end connections
\n\u2022 Manual, gear-operated, pneumatic, electric, and hydraulic operation options
\n\u2022 Suitable for large-size and high-pressure industrial applications<\/p>\n
Product Type: Two-Piece Trunnion Ball Valve
\nValve Design: Two-piece body, trunnion-mounted ball, soft seated or metal seated
\nNominal Size: DN50\u2013DN1200 \/ 2″\u201348″
\nPressure Rating: Class 150, Class 300, Class 600, Class 900, Class 1500, PN16, PN25, PN40, PN64, PN100
\nBody Material: WCB, LCB, WC6, WC9, CF8, CF8M, Duplex Stainless Steel
\nBall Material: A105 + ENP, F304, F316, F51, F53
\nStem Material: 13Cr, F304, F316, Duplex Stainless Steel
\nSeat Material: PTFE, RPTFE, NYLON, PEEK, PPL, Metal Seat
\nEnd Connection: Flanged, Butt Weld, RTJ Flanged, Customized Ends
\nOperation: Gear Operator, Pneumatic Actuator, Electric Actuator, Hydraulic Actuator
\nDesign Standard: API 6D, API 608, ISO 17292
\nTesting Standard: API 598, API 6D
\nApplicable Media: Oil, Natural Gas, Water, Steam, Petrochemical Fluids, Industrial Gas<\/p>\n
The trunnion-mounted structure supports the ball from both the top and bottom, preventing the ball from moving freely under line pressure. This allows the valve seats to move toward the ball to create sealing contact.<\/p>\n
Compared with floating ball valves, this design helps reduce operating torque and seat wear, especially in larger sizes and higher pressure ratings. For pipeline applications where frequent operation, high pressure, or larger diameters are involved, trunnion ball valves provide better mechanical stability and more reliable long-term performance.<\/p>\n
\u2022 Oil and gas transmission pipelines
\n\u2022 Natural gas processing plants
\n\u2022 Petrochemical process systems
\n\u2022 Refinery units
\n\u2022 Power plant pipelines
\n\u2022 High-pressure water systems
\n\u2022 Industrial gas systems
\n\u2022 Long-distance pipeline isolation<\/p>\n
Raymon provides trunnion-mounted ball valve solutions for demanding industrial and pipeline applications. Our Two-Piece Trunnion Ball Valves are available in a wide range of pressure classes, body materials, seat materials, end connections, and operation options.<\/p>\n
We support customized valve selection based on pressure rating, pipeline size, medium, temperature, sealing requirement, operation method, and project standard. For oil and gas, petrochemical, power, and high-pressure industrial systems, Raymon can help provide suitable valve configurations according to actual working conditions.<\/p>\n
Q1: What is a Two-Piece Trunnion Ball Valve?
\nA: A Two-Piece Trunnion Ball Valve is a ball valve with a two-piece body and a trunnion-mounted ball design. The ball is supported by upper and lower trunnions, making it suitable for larger sizes and higher pressure applications.<\/p>\n
Q2: What is the difference between floating ball and trunnion ball valve?
\nA: In a floating ball valve, the ball moves slightly under pressure to seal against the downstream seat. In a trunnion ball valve, the ball is fixed and supported by trunnions, while the seats move toward the ball for sealing.<\/p>\n
Q3: Is this valve suitable for high-pressure applications?
\nA: Yes. Trunnion-mounted ball valves are commonly used in medium- and high-pressure pipeline systems, including Class 300, Class 600, Class 900, and higher pressure ratings.<\/p>\n
Q4: Can this valve be automated?
\nA: Yes. It can be supplied with gear operator, pneumatic actuator, electric actuator, hydraulic actuator, or gas-over-oil actuator package.<\/p>","protected":false},"excerpt":{"rendered":"
The Two-Piece Trunnion Ball Valve is designed for medium- and high-pressure pipeline systems where reliable shut-off, low operating torque, and stable sealing performance are required. Its trunnion-mounted ball design supports the ball at both ends, reducing seat load and making it suitable for larger sizes and higher pressure classes. Available in carbon steel, stainless steel, flanged, welded, manual, gear-operated, pneumatic, and electric 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