Design features
a supported ball that transfers pressure load to trunnion bearings instead of the seats
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Ball valves / LIANGGU
Trunnion Mounted Ball Valve
This model is a ball valve distinguished by a supported ball that transfers pressure load to trunnion bearings instead of the seats. For a project quotation, share the required size, pressure designation, materials, seating, connections and quantity. Final suitability is confirmed against the approved specification.
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Explore product details ↓ PRODUCT DETAILS
Understand this valve.
Working principle
a quarter-turn stem rotates a bored ball between open and closed positions; seat design, ball support, body construction, cavity pressure management, and operating torque determine service suitability; verify body cavity relief and double block
Typical applications
oil and gas pipelines, terminals, compressor stations, and high-pressure process isolation
Selection priorities
seat arrangement, body cavity relief, double block and bleed need, actuator torque, fire-safe duty, and bore
SPECIFICATION REVIEW
Define the required configuration.
Manufacturer-listed options remain subject to the selected design and service. They are not fixed specifications for every configuration.
| Size / DN or NPS | Project-specific — include in your RFQ |
|---|---|
| Pressure designation | Project-specific — include in your RFQ |
| Common material options | Manufacturer optionCarbon steel, low-temperature steel, stainless steel, alloy steel, or another approved alloy after service and fabrication review |
| End connection & standard | Manufacturer optionFlanged or butt-welded ends, subject to confirmation for the selected design and approved piping class. |
| Actuation & accessories | Manufacturer optionManual, geared, electric, pneumatic, or hydraulic operation only where the selected design and duty support it |
| Design standards | Manufacturer optionAPI 6D and ISO 14313 may apply to qualifying pipeline-valve service; API 608 may apply to other metal ball-valve configurations |
| Lead time & documentation | Confirmed in the written quotation |
Other materials & project configurations
Listed materials are common options, not an exhaustive range. Share the required grade and service conditions so we can review suitability, manufacturing feasibility and availability.
Catalogue information supports the enquiry. Approved technical documents define the final supply.
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