China Suppliers Factory Class 300 Forged DBB Trunnion-Mounted Ultra-Low Temperature Ball Valve for Cryogenic Applications
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 and Low Temperature
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 Cryogenic 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 and large storage tanks.
Customizable Materials and Sizes
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., to meet specific industry needs.
These cryogenic ball valves are engineered to operate in extreme low-temperature environments. With PCTFE Cryogenic Seats and Lip-Seal Compensation, they can perform reliably down to -196°C, while the forged trunnion-mounted design supports operation as low as -46°C under high-pressure conditions.
The valves incorporate a comprehensive set of safety features including Double-Block-and-Bleed (DBB) design, Anti-Static protection, Fire-Safe certification, Anti-Blowout Stem, and Low Fugitive Emission Packing — all working together to ensure maximum leak prevention in critical applications.
These valves are suitable for a wide range of cryogenic fluids, including LNG, Liquid Nitrogen (LN₂), Liquid Oxygen (LOX), and Liquid Hydrogen (LH₂). They are also designed for high-flow industrial pipelines and large storage tank applications.
The valves are available in sizes ranging from 2" to 36" (DN50 to DN900). Material options include A350 LF2, F316(L), Inconel 625, Hastelloy C, and more, allowing customization to meet the specific demands of various industries and operating environments.
Every valve undergoes stringent in-house cryogenic testing prior to shipment. This rigorous testing process ensures that each unit meets the highest standards for leak-free performance and reliable operation, even in the most demanding low-temperature environments.
The forged trunnion-mounted design provides superior structural stability by anchoring the ball at both the top and bottom, reducing stress on the seats and seals under high-pressure conditions. This results in longer service life, consistent sealing performance, and reliable operation even in demanding industrial environments.

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