China Class300 Forged DBB Trunnion-Mounted Ultra-Low Temperature Ball Valve Suppliers, Factories

Reliable Cryogenic Performance: Ensures stable operation at low temperatures, down to -46°C, with deep cryogenic treatment for enhanced performance.

Leak-Free Sealing: Features PTFE seals and durable lip seals for long-lasting, leak-free operation in demanding environments.

High-Pressure Resistance: Forged trunnion-mounted design ensures stable operation under high-pressure conditions.

Rigorous Testing: Each valve undergoes in-house cryogenic testing to guarantee consistent, high-quality performance.

Comprehensive Safety: Fire-safe, anti-static, and anti-fly stem designs provide superior safety in critical applications.

Product Description

Key Features
🛡️ Leak-Free and Safe Design

Double-Block-and-Bleed (DBB), Anti-Static, Fire-Safe, Anti-Blowout Stem, and Low Fugitive Emission Packing ensure maximum safety and leak prevention in critical applications.

❄️ Reliable Cryogenic Performance

Engineered to perform in extreme cold conditions down to -196°C, with PCTFE Cryogenic Seats and Lip-Seal Compensation for a tight, leak-free seal even under low temperatures.

💪 Durability Under High Pressure

Forged trunnion-mounted design ensures durability and reliable operation at temperatures as low as -46°C, with resistance to both low temperatures and high-pressure conditions.

🔬 Stringent In-House Testing

Every valve undergoes rigorous in-house cryogenic testing to guarantee reliable, leak-free operation and performance in the most demanding low-temperature environments.

🚀 Wide Application Range

Ideal for cryogenic fluids such as LNG, Liquid Nitrogen (LN₂), Liquid Oxygen (LOX), Liquid Hydrogen (LH₂), and other high-flow fluids, as well as industrial pipelines.

⚙️ Customizable Materials

Available in a variety of sizes (2" to 36", DN50 to DN900) and materials such as A350 LF2, F316(L), Inconel 625, Hastelloy C, etc.

Product Description

The Class 300 Cryogenic Ball Valve is engineered for reliable performance in extreme low-temperature conditions, down to -196°C. Featuring a trunnion-mounted ball and durable materials like F316(L) and Inconel 625, it ensures leak-free operation under both low temperatures and high pressures. Advanced sealing materials such as PEEK and PCTFE provide long-lasting, dependable sealing.

Ideal for cryogenic fluids like LNG, LN₂, LOX, and LH₂, it offers versatile actuation options including manual, electric, pneumatic, and hydraulic. Built to meet global standards (GB/T14925, ASME B16.34), each valve undergoes rigorous in-house testing to ensure consistent, high-quality performance.

Technical Specifications - Parts List

Dimensions: Class 300 - Full Port

Size NPS/DN Bore (in/mm) Model / Face to Face (Side Entry) Weight (lb/kg)
B1 B2 RF RTJ BWE (FF) BWE (FW) Model FF Model FW
2" / 50 1.94 / 49 1.94 / 49 8.5 / 216 9.13 / 232 8.5 / 216 11 / 279 60 / 27 60 / 27
3" / 80 2.94 / 74 2.94 / 74 11.13 / 283 11.75 / 298 11.13 / 283 12.5 / 318 132 / 60 132 / 60
4" / 100 3.94 / 100 3.94 / 100 12 / 305 12.63 / 321 12 / 305 14 / 356 179 / 81 179 / 81
6" / 150 5.94 / 150 5.94 / 150 15.88 / 403 16.5 / 419 18 / 457 18 / 457 408 / 185 397 / 180

Dimensions: Class 300 - Reduced Port

Size NPS/DN Bore B1 Bore B2 RF (in/mm) RTJ (in/mm) BWE FF BWE FW Weight FF Weight FW
2"×1 1/2" / 50×40 1.94 / 49 1.5 / 38 8.5 / 216 9.13 / 232 8.5 / 216 11 / 279 57 / 26 57 / 26
3"×2" / 80×50 2.94 / 74 1.94 / 49 11.13 / 283 11.75 / 298 11.13 / 283 12.5 / 318 88 / 40 88 / 40

Weight and dimensions for larger valve sizes up to 36" available on request.

Frequently Asked Questions
What is the minimum operating temperature for these valves?
These cryogenic ball valves are engineered to perform reliably in extreme cold conditions down to -196°C, making them suitable for LNG and liquid nitrogen applications.
What safety features are included in the design?
The design includes Double-Block-and-Bleed (DBB) capability, anti-static protection, fire-safe construction, an anti-blowout stem, and low fugitive emission packing for maximum safety.
Which materials are used for the valve body and seals?
Typical materials include A350 LF2, F316(L), Inconel 625, and Hastelloy C. Sealing is achieved using high-performance materials like PEEK and PCTFE for cryogenic reliability.
What standards do these cryogenic valves comply with?
The valves are built to meet rigorous global industrial standards, specifically GB/T14925 and ASME B16.34, ensuring high quality and performance.
Are there different actuation options available?
Yes, the valves offer versatile actuation options including manual, electric, pneumatic, and hydraulic systems to suit different industrial requirements.
What sizes are available for the Class 300 Cryogenic Ball Valve?
Standard sizes range from 2" to 36" (DN50 to DN900). Detailed dimensions for Full Port and Reduced Port options are available in our technical specifications.

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