18061659285
China Suppliers Factory Full Port Cryogenic Trunnion Mounted DBB Ball Valve - F316, Gear Operated for LNG Safety
Trunnion Mounted Ball Design
Protects upstream and downstream seats from excessive load for long service life.
Extended Stem with Cryogenic Neck & Anti-Blowout
Prevents cold transfer to packing and actuator, and ensures stem retention under pressure.
Lip Seal Design
Enhances sealing reliability under extreme low temperatures.
Worm Gear Operator with ISO 5211 Mounting
Reduces operating torque for precise control; can be upgraded to electric or pneumatic actuation.
A trunnion mounted ball design mechanically anchors the ball at the top and bottom, which prevents the ball from shifting under line pressure. This reduces the load on the seats, significantly extending their service life and making it ideal for high-pressure or large-diameter applications.
The extended cryogenic neck creates a thermal barrier between the extremely cold media and the packing or actuator assembly. This prevents cold transfer that could cause packing to become brittle or actuator components to malfunction, ensuring safe and reliable operation in low-temperature environments.
The anti-blowout stem feature prevents the stem from being ejected from the valve body under high-pressure conditions. It is a critical safety design that retains the stem securely even if the packing fails, protecting personnel and equipment from potentially hazardous incidents.
The lip seal is specifically engineered to maintain its flexibility and sealing integrity at cryogenic temperatures where conventional seals may harden and leak. Its geometry ensures consistent contact pressure against the sealing surfaces, providing reliable zero-leakage performance even under significant thermal cycling.
Yes. The valve features an ISO 5211 mounting pad on the worm gear operator, which is a standardized international interface. This allows straightforward retrofitting or factory installation of electric, pneumatic, or hydraulic actuators without requiring modifications to the valve body, enabling flexible integration into automated control systems.
These features are specifically designed for demanding industries such as LNG (liquefied natural gas), liquid oxygen, liquid nitrogen, and other cryogenic fluid handling applications. They are also suitable for high-pressure industrial pipelines, petrochemical processing, and any application requiring long-term reliable flow control under extreme temperature or pressure conditions.