Design features
an extended stem and low-temperature sealing system for cryogenic media
Final dimensions, materials, ratings and documentation depend on the approved configuration.
Ball valves / LIANGGU
Cryogenic Extended Stem Ball Valve
This model is a ball valve distinguished by an extended stem and low-temperature sealing system for cryogenic media. 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 resilience and cavity relief direction
Typical applications
LNG, liquid oxygen or nitrogen systems subject to approved cleaning, cold storage, and vaporization units
Selection priorities
extension height, seat resilience, cavity relief direction, material impact properties, cleanliness, and minimum temperature
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 optionLow-temperature-qualified stainless steel or other approved alloy, with impact properties, seat, packing, and bolting verified at the minimum design temperature |
| 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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