Cryogenic Trunnion Mounted DBB Ball Valve F316 - Gear Operated | China Suppliers & Factory Direct

The trunnion mounted ball design mechanically anchors the ball at both the top and bottom, distributing pipeline pressure loads away from the seats. This significantly reduces seat wear and friction, resulting in a longer service life and more reliable shutoff performance in demanding cryogenic applications.

The extended stem keeps the packing and actuator connection point well above the cryogenic fluid, preventing cold transfer that could cause packing materials to become brittle and fail. The anti-blowout feature also ensures the stem remains securely retained even under high internal pressure, providing an additional layer of safety.

The lip seal design uses a flexible sealing lip that self-energizes under pressure, maintaining tight contact with the sealing surface even as materials contract at cryogenic temperatures. This compensates for dimensional changes caused by thermal contraction and ensures consistent, leak-free sealing performance throughout the valve's operating range.

Yes. The valve is equipped with an ISO 5211 standard mounting flange, which provides a direct, standardized interface for attaching electric or pneumatic actuators. This makes it straightforward to upgrade from manual worm gear operation to automated control without requiring custom adapters or modifications to the valve body.

Cryogenic ball valves of this type are typically designed to operate at temperatures as low as -196°C (-320°F), making them suitable for liquefied natural gas (LNG), liquid nitrogen, liquid oxygen, and other cryogenic media. The combination of extended stem, lip seal, and trunnion mounted ball ensures reliable operation across this extreme temperature range.

Cryogenic ball valves with these features are commonly designed and tested in accordance with international standards such as BS 6364 (cryogenic valves), API 6D (pipeline valves), and ISO 21011 (cryogenic vessels and equipment). The ISO 5211 mounting pad also ensures actuator compatibility with globally recognized automation components.