High-Quality Compact Cryogenic Trunnion Mounted Ball Valve with Worm Gear - China Suppliers & Factory for Reliable Performance Suppliers, Factories

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High-Quality Compact Cryogenic Trunnion Mounted Ball Valve with Worm Gear - China Suppliers & Factory for Reliable Performance Suppliers, Factories

âˆšÂ The trunnion mounted design guarantees stable sealing and low operating torque, making it ideal for high-pressure applications in China.

âˆšÂ Featuring an extended stem with a cryogenic neck, our valves effectively isolate the packing from extreme low temperatures, preventing any external leakage.

âˆšÂ Its compact short-body structure not only saves installation space but also ensures cryogenic safety, a critical attribute for suppliers seeking efficiency.

âˆšÂ The worm gear operation offers smooth and reliable manual control, specifically tailored for large-size valves, ensuring ease of use in various industrial settings.

âˆšÂ Designed with fire-safe, anti-static, and anti-blowout stem features, our products prioritize maximum safety in critical services, epitomizing the quality you can expect from a trusted factory.

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Product Description

Key Features

Trunnion Mounted Structure

Stable sealing and low operating torque under high pressure, ideal for large-size cryogenic service.

Extended Stem & Cryogenic Neck

Isolates packing from -196°C media, reducing leakage risk in ultra-low temperature environments.

Compact Short-Body Design

Space-saving structure for skid-mounted or modular systems while maintaining cryogenic integrity.

Worm Gear Operation

Smooth and controlled manual actuation with reduced torque, suitable for frequent operation.

Cryogenic Sealing System

Specialized seat and seal materials accommodate low-temperature contraction for reliable shut-off.

High Safety Design

Anti-blowout stem with optional fire-safe and anti-static devices for critical and hazardous applications.

Frequently Asked Questions

Q What is a trunnion mounted cryogenic ball valve and how does it differ from a floating ball valve?

A trunnion mounted cryogenic ball valve uses a fixed ball supported by upper and lower trunnions, which absorbs pipeline pressure and reduces seat load. This design maintains stable sealing with significantly lower operating torque compared to floating ball valves, making it ideal for large-diameter, high-pressure cryogenic applications such as LNG and liquid nitrogen systems.

Q Why is an extended stem and cryogenic neck design important for low-temperature service?

The extended stem and cryogenic neck keep the stem packing assembly away from the cryogenic media (as low as -196°C). This prevents the packing from freezing or losing elasticity, which could otherwise result in dangerous stem leakage. It also allows operators to handle the valve safely without risk of cold burns from direct contact with ultra-low temperature components.

Q What industries or applications commonly use this type of cryogenic ball valve?

These valves are widely used in LNG (liquefied natural gas) storage and transportation, liquid oxygen and nitrogen plants, air separation units, liquid hydrogen systems, cryogenic chemical processing, and skid-mounted modular gas systems. The compact short-body design and worm gear actuation make them especially suited for space-constrained industrial installations.

Q What materials are used in the sealing system to handle extreme low-temperature conditions?

Cryogenic ball valves typically use specialized seat and seal materials such as PTFE (polytetrafluoroethylene), PEEK, or reinforced PTFE composites that remain flexible and functional at temperatures as low as -196°C. These materials are engineered to compensate for thermal contraction, ensuring a reliable and leak-free shut-off throughout the full operating temperature range.

Q What safety features are included in the high safety design of this cryogenic ball valve?

The high safety design incorporates an anti-blowout stem that prevents the stem from being ejected under pressure. Optional fire-safe construction ensures the valve maintains sealing integrity even when soft seals are damaged by fire. Anti-static devices are also available to prevent static charge buildup, which is critical when handling flammable cryogenic fluids like LNG or liquid hydrogen.

Q Is the worm gear operator suitable for automated or remote-controlled systems?

The worm gear operator is primarily designed for manual actuation, providing smooth and controlled operation with reduced torque requirements. However, the valve can be adapted for automated operation by replacing or coupling the worm gear with pneumatic, electric, or hydraulic actuators, making it compatible with remote-controlled or automated process control systems as required by the application.

Product Detail

High-Quality Compact Cryogenic Trunnion Mounted Ball Valve with Worm Gear - China Suppliers & Factory for Reliable Performance Suppliers, Factories