Design features
top-access construction that permits internal maintenance without removing the complete body from the line
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Ball valves / LIANGGU
Top Entry Ball Valve
This model is a ball valve distinguished by top-access construction that permits internal maintenance without removing the complete body from the line. For a project quotation, share the required size, pressure designation, materials, seating, connections and quantity. Final suitability is confirmed against the approved specification.
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 seat removal method and body casting or forging
Typical applications
critical pipelines, offshore modules, compressor stations, and installations with limited removal space
Selection priorities
top-entry clearance, seat removal method, body casting or forging, cavity relief, lifting plan, and in-line maintenance procedure
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 608, API 6D, ISO 14313, or the project product standard as the construction and service require; fire testing is a separate specified scope |
| 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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