วาล์วลูกบอลแบบเข้าด้านข้างสำหรับระบบอุณหภูมิต่ำสุด (Cryogenic) ในการใช้งานกับก๊าซธรรมชาติเหลว (LNG)
วาล์วลูกบอลแบบเข้าด้านข้าง WDL สำหรับอุณหภูมิต่ำมาก ให้การปิดที่เชื่อถือได้สำหรับ LNG ไนโตรเจนเหลว ออกซิเจนเหลว และสารอื่นๆ ที่ใช้อุณหภูมิต่ำ จนถึง -196°C.
คำอธิบาย
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.
คุณสมบัติหลัก
- 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.
Technical Specifications
| รายการ | ข้อมูลจำเพาะ |
|---|---|
| Product Type | Side entry cryogenic ball valve |
| ช่วงขนาด | DN25–DN600 / NPS 1–24 |
| Body Construction | Two-piece or three-piece side entry body |
| End Connections | Flanged, threaded, socket weld or butt weld, subject to valve size and project requirement |
| มาตรฐานการพบหน้ากันโดยตรง | ASME B16.10 or project-specified standard |
| Temperature Range | -196°C to +425°C, depending on material and seat selection |
| Cryogenic Testing | BS 6364 or project-specified testing requirements |
| การดำเนินการ | 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.
การใช้งานทั่วไป
- 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.
รีวิว
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