Design features
an extended operating stem and protected body system for below-grade installation
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Ball valves / LIANGGU
Direct-Buried Pipeline Ball Valve
This model is a ball valve distinguished by an extended operating stem and protected body system for below-grade installation. 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 stem extension and coating
Typical applications
gas distribution, district heating, water transmission, and buried utility corridors
Selection priorities
burial depth, stem extension, coating and holiday test, drainage, soil load, cathodic protection interface, and access box
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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