Van bi siêu lạnh có lối vào bên hông dành cho hệ thống LNG
Van bi siêu lạnh WDL kiểu lắp bên hông van đảm bảo khả năng ngắt dòng đáng tin cậy cho khí tự nhiên hóa lỏng (LNG), nitơ lỏng, oxy lỏng và các chất mang nhiệt độ thấp khác, xuống đến -196°C.
Mô tả
control of low-temperature fluids in demanding industrial systems. They are suitable for
LNG, liquid nitrogen, liquid oxygen, liquid argon and other cryogenic media where
dependable sealing and material toughness are essential.
The valve uses an extended stem design to keep the packing area away from the cold zone,
helping reduce frost formation and protecting the stem sealing system. Low-temperature
materials, carefully selected seat options and a robust side entry body construction
support reliable performance in cryogenic pipeline service.
Main Features
- Suitable for cryogenic service down to -196°C.
- Extended bonnet or extended stem design to reduce frost at the packing area.
- Side entry two-piece or three-piece body construction.
- Low-temperature stainless steel materials with good toughness.
- Reliable soft-seated sealing for low-leakage shut-off service.
- Metal-seated options available for specific pressure and temperature requirements.
- Elastic seat compensation helps maintain sealing performance during temperature changes.
- Manual, pneumatic and electric actuation options available.
- Fire-safe and anti-static designs available according to project requirements.
- Available in customized materials, sizes, pressure ratings and end connections.
Thông số kỹ thuật
| Mặt hàng | Specification |
|---|---|
| Loại sản phẩm | Side entry cryogenic ball valve |
| Phạm vi kích thước | DN25–DN600 / NPS 1–24 |
| Body Construction | Thân xe hai mảnh hoặc ba mảnh có cửa vào bên hông |
| End Connections | Flanged, threaded, socket weld or butt weld, subject to valve size and project requirement |
| Face-to-Face Standard | Tiêu chuẩn ASME B16.10 hoặc tiêu chuẩn do dự án quy định |
| Phạm vi nhiệt độ | -196°C to +425°C, depending on material and seat selection |
| Cryogenic Testing | Tiêu chuẩn BS 6364 hoặc các yêu cầu thử nghiệm do dự án quy định |
| Hoạt động | Manual lever or gear operator, pneumatic actuator or electric actuator |
| Typical Body Materials | CF8 / F304, CF8M / F316, CF3 / F304L, CF3M / F316L and other special materials on request |
Cryogenic Design Advantages
At very low temperatures, ordinary materials may lose toughness and become vulnerable to
brittle fracture. WDL Valve selects cryogenic-compatible stainless steel materials and
applies controlled manufacturing and testing procedures to support safe operation in
low-temperature conditions.
The extended stem configuration separates the stem packing from the cold fluid area.
This design helps limit ice accumulation around the operating mechanism and supports
smoother valve operation. Seat designs can also be selected to compensate for material
contraction caused by temperature changes.
Các ứng dụng điển hình
- LNG storage, loading, transportation and regasification systems
- Liquid nitrogen, liquid oxygen and liquid argon pipelines
- Industrial gas and air separation plants
- Cryogenic chemical processing systems
- Hydrogen, aerospace and specialized low-temperature projects
- Cold-storage refrigeration and pharmaceutical freeze-drying equipment
WDL Valve Customization
WDL Valve can configure cryogenic ball valves according to your operating medium,
temperature, pressure class, valve size, connection standard, sealing requirement and
actuator preference. Please provide the project datasheet for final material selection
and technical confirmation.
Specifications shown are for reference. Final dimensions, materials, pressure-temperature
limits, sealing design and cryogenic testing requirements shall be confirmed by the
approved WDL Valve technical drawing and project datasheet.
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