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Class 300 Forged DBB Trunnion-Mounted Ultra-Low Temperature Ball Valve - Reliable China Suppliers & Factory
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 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.
Frequently Asked Questions
Q What temperature range can these cryogenic ball valves handle?
These cryogenic ball valves are designed to operate in extreme temperature environments, ranging from as low as -196°C for cryogenic applications (using PCTFE Cryogenic Seats) to standard industrial operating temperatures. The forged trunnion-mounted design reliably handles temperatures down to -46°C under high-pressure conditions.
Q What cryogenic fluids are these valves compatible with?
These valves are suitable for a wide range of cryogenic fluids, including LNG (Liquefied Natural Gas), Liquid Nitrogen (LN₂), Liquid Oxygen (LOX), and Liquid Hydrogen (LH₂). They are also applicable for other high-flow industrial fluids used in pipelines and large storage tank systems.
Q What safety features are included in the valve design?
The valves incorporate multiple safety features, including Double-Block-and-Bleed (DBB) functionality, Anti-Static protection, Fire-Safe design, Anti-Blowout Stem, and Low Fugitive Emission Packing. These features collectively ensure maximum safety and leak prevention in critical and hazardous applications.
Q What sizes and materials are available for customization?
The valves are available in a comprehensive size range from 2" to 36" (DN50 to DN900). Material options include A350 LF2, F316(L), Inconel 625, Hastelloy C, and more, allowing customization to meet specific industry requirements and operating conditions.
Q How are the valves tested before delivery?
Every valve undergoes stringent in-house cryogenic testing prior to shipment. This rigorous testing process verifies reliable, leak-free performance under the most demanding low-temperature conditions, ensuring that each unit meets the highest quality and safety standards before reaching the customer.
Q What is the advantage of a trunnion-mounted design over a floating ball design?
A trunnion-mounted design provides mechanical support to the ball via a fixed trunnion, which significantly reduces operating torque under high-pressure conditions. This makes it ideal for large-diameter and high-pressure applications, offering enhanced durability, stability, and reliable sealing performance compared to floating ball designs—especially in demanding cryogenic environments.