China Suppliers Factory Compact Cryogenic Trunnion Mounted Ball Valve with Worm Gear for High Pressure Applications

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China Suppliers Factory Compact Cryogenic Trunnion Mounted Ball Valve with Worm Gear for High Pressure Applications

âˆšÂ The trunnion mounted design of our valves guarantees stable sealing and reduced operating torque, even under high pressure conditions, making it an ideal choice for suppliers seeking reliability.

âˆšÂ Featuring an extended stem with a cryogenic neck, our products effectively isolate the packing from extreme low temperatures, ensuring no external leakage, essential for any factory focused on safety.

âˆšÂ Our compact short-body structure not only saves installation space but also adheres to strict cryogenic safety standards, making it a preferred option for China-based suppliers.

âˆšÂ The worm gear operation allows for smooth and reliable manual control, particularly suited for large-size valves, enhancing operational efficiency for factories.

âˆšÂ Designed with fire-safe, anti-static, and anti-blowout stem features, our valves provide maximum safety for critical services, solidifying our reputation as a trusted supplier in China.

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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

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

A trunnion mounted cryogenic ball valve features a ball that is mechanically anchored at both the top and bottom by trunnion supports, which absorbs pipeline pressure loads and significantly reduces operating torque. Unlike floating ball valves where the ball moves freely against the seats, the trunnion design keeps the ball stationary, making it the preferred choice for large-diameter, high-pressure cryogenic applications.

Why is an extended stem and cryogenic neck essential for ultra-low temperature service?

The extended stem and cryogenic neck are designed to keep the packing gland area away from the extremely cold media (as low as -196°C). This temperature isolation prevents the packing material from becoming brittle or failing, greatly reducing the risk of stem leakage and ensuring long-term reliable sealing performance in liquid nitrogen, LNG, and other cryogenic fluid applications.

What advantages does the compact short-body design offer for cryogenic systems?

The compact short-body design minimizes the overall face-to-face length of the valve, which saves valuable space in skid-mounted or modular process systems. Despite its reduced footprint, the design fully maintains structural integrity and cryogenic performance, making it ideal for confined installations where space efficiency is critical without compromising safety or functionality.

How does worm gear operation benefit cryogenic ball valve performance?

Worm gear operation provides a mechanical advantage that dramatically reduces the manual effort required to open or close the valve, particularly important in large-size or high-pressure cryogenic service where operating torque can be considerable. The gear mechanism also delivers smooth, controlled movement and precise positioning, making it well-suited for valves that require frequent cycling or fine-tuned flow control.

What materials are used in the cryogenic sealing system to ensure reliable shut-off at low temperatures?

Cryogenic sealing systems typically utilize specialized seat materials such as PTFE, PEEK, or reinforced polymer composites, which are engineered to remain flexible and maintain their sealing properties even when subjected to extreme thermal contraction at temperatures as low as -196°C. The seat design is also pre-loaded to compensate for material shrinkage, ensuring a bubble-tight shut-off throughout the full operating temperature range.

What safety features are included in the high safety design for hazardous applications?

The high safety design incorporates an anti-blowout stem that prevents the stem from being ejected under pressure in the event of packing failure, providing a critical layer of protection for operators. Optional features include a fire-safe design that ensures the valve maintains its sealing integrity during a fire event, and anti-static devices that dissipate any electrostatic charge buildup on the ball and stem, preventing ignition sparks in explosive or hazardous fluid handling environments.

Product Detail

China Suppliers Factory Compact Cryogenic Trunnion Mounted Ball Valve with Worm Gear for High Pressure Applications