Cryogenic Gate Valve

The Cryogenic Gate Valve features a wedge gate, extended bonnet, and cryogenic sealing structure, making it suitable for media such as LNG, liquid oxygen, liquid nitrogen, liquid argon, and ethylene. It is commonly used in LNG receiving terminals, storage tanks, industrial gas pipelines, and petrochemical cryogenic pipelines.

Extended Bonnet Design: The extended bonnet reduces the conduction of cryogenic temperatures to the packing area.

Low-Temperature Sealing: The cryogenic sealing structure is matched to the medium and design temperature.

Wedge Gate Structure: The wedge gate structure provides reliable line shut-off and isolation.

Cavity Pressure Control: The valve cavity pressure control structure reduces the risk of overpressure in the closed cavity.

Material Options: Match valve body, cover, stem, and internal components materials according to operating conditions. Materials such as CF8, CF8M, CF3, and CF3M are available; special materials can be evaluated on a project-by-project basis.

Applicable Standards: Comply with relevant standards based on product structure and project requirements. Standards include API 600, ASME B16.34, ASME B16.5, ASME B16.25, ISO 28921-1, and API 598.

Pressure Testing: Perform shell and seal testing according to applicable standards. Verify valve pressure resistance and shut-off performance, and provide corresponding test records.

Cryogenic Testing: Perform cryogenic sealing and operational testing according to project requirements. Test temperature, methods, and proportions are determined according to the technical agreement.

Material Verification: Verify the material composition and batch traceability of critical materials. Documents such as PMI, MTC, and EN 10204 3.1 can be provided.

NDT Inspection: Non-destructive testing performed according to material and project requirements. PT, UT, RT, and other testing services are available.

Quality Documents: Quality documents correspond to product batches. MTC, Test Report, Inspection Report, NDT Report, COC, etc., are available.

Precision Machining: CNC machining ensures dimensional accuracy of valve bodies, stems, and sealing components. Combined with grinding and dimensional inspection, product consistency is controlled.

Assembly & Testing: Delivery after assembly, commissioning, and factory testing. Pressure, sealing, and functional checks are performed according to product specifications.

Traceability: Establishing quality traceability from raw materials to finished products. Supports querying material furnace numbers, processing, inspection, and testing records.

Size & Pressure: Supports customization of different sizes and pressure ratings. Engineering confirmation is performed based on project pipe diameter, pressure, and installation conditions.

Material & Connection: Supports customization of materials and connection methods. RF, RTJ, Butt Weld, and other end connections are available.

Extension Length: Extended valve covers and stems can be customized to fit insulation thickness. Suitable for cold box, tank, and cryogenic pipeline installations.

Actuation & OEM: Supports manual, gear, electric, pneumatic, and hydraulic actuation. Nameplates, markings, packaging, and technical documents can be customized.

Export Packaging: Protects valves with export packaging suitable for sea transport. Port protection, moisture-proof, rust-proof, and plywood crate packaging are available.

Technical Documents: Provides the technical and quality documents required for the project. This may include GA Drawings, Datasheets, MTC, Test Reports, COCs, IOM Manuals, etc.

Third-Party Inspection: Supports third-party inspection and factory inspection. Can cooperate with customer-designated institutions for material, dimensional, pressure, and final inspections.

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