Forged Cryogenic Trunnion Ball Valve

High Performance • Durable • Leak Proof

API 6DASME B16.34ISO 17292CE Certified

Specialized forged cryogenic trunnion ball valve for extreme low-temperature LNG and liquid nitrogen applications.

Forged Cryogenic Trunnion Ball Valve Manufacturer in Africa

Product Introduction

Cryogenic pipelines under high pressure require valves that are able to maintain their seal integrity despite extreme conditions of temperature and pressure. A Forged Cryogenic Trunnion Ball Valve is designed for such applications due to its construction based on a forged body and trunnion mounted ball. Such design allows reducing the operating torque, increases seat load and guarantees reliable shut-off under continuous cryogenic service conditions. The extended bonnet provides protection of the stem packing from direct contact with extremely low temperatures. African Valve is a Leading Forged Cryogenic Trunnion Ball Valve Manufacturer in Africa, producing and selling Forged Cryogenic Trunnion Ball Valves in different material grades, pressure ratings, end connections and actuator options for projects in Nigeria, Egypt, South Africa, Kenya, Ghana and other African countries as well as exports.

Why Choose a Trunnion Mounted Design?

As opposed to a floating ball valve, the ball of a trunnion mounted ball valve is fixed at the top and bottom ends. This design ensures that there is little movement because of the line pressure, thereby ensuring that the seats maintain contact with the ball throughout. The torque requirement is therefore greatly minimized and becomes even more pronounced in large valves and high pressure class valves. Forged valves have better mechanical properties and can be used in cryogenic applications.

Valve Construction

The valve is comprised of a forged valve body, trunnion mounted ball, seat assembly, long bonnet, stem, bearings, and actuator. Turning the lever, gearbox, or actuator by 90 degrees positions the ball bore parallel to the piping, allowing complete flow. Moving the ball back to its closed position causes the seats to press hard against the sealing area, which provides for proper shut off. The long bonnet isolates the stem packing from the cryogenic fluid, thus reducing the thermal effect while ensuring the proper operation of the valve. Depending on the project specifications, the valve can be available with different types of actuators.

Materials & Construction
The valve is manufactured using:
Stainless Steel Forgings – ASTM A182 F304L / F316L
Low Temperature Carbon Steel Forgings – ASTM A350 LF2
Duplex Stainless Steel Forgings – ASTM A182 F51
Super Duplex Stainless Steel Forgings – ASTM A182 F53 / F55
Alloy Steel Forgings – ASTM A182 F11 / F22
Construction features include:
Forged Body Construction
Trunnion Mounted Ball Design
Extended Bonnet Assembly
Blow-out Proof Stem
Fire-safe Design
Anti-static Device
Double Block and Bleed Capability (Optional)
PTFE, PEEK, Devlon, or Metal Seat Options
Flanged, Butt Weld, and Socket Weld End Connections
Technical Specifications
Size Range: DN25 to DN600 (1" to 24")
Pressure Ratings: Class 150, 300, 600, 900, 1500, 2500
Design Standards: API 6D, BS 6364, ASME B16.34, ISO 17292
Testing Standard: API 598, API 6D, BS 6364
End Connections: Flanged, Butt Weld, Socket Weld
Operation: Lever, Gear, Pneumatic, Electric, Hydraulic
Industrial Applications
Forged Cryogenic Trunnion Ball Valves are widely used in:
LNG Storage and Distribution
LNG Loading and Unloading Terminals
Liquid Nitrogen Systems
Liquid Oxygen Systems
Liquid Argon Systems
Air Separation Units
Cryogenic Storage Facilities
Industrial Gas Processing
Product Features
Forged body provides excellent mechanical strength
Trunnion-mounted ball reduces operating torque
Extended bonnet protects packing during cryogenic service
Available with soft-seated and metal-seated designs
Suitable for high-pressure cryogenic applications
Manufactured according to internationally recognized engineering standards
Manufacturing & Inspection
Forged Cryogenic Trunnion Ball Valves are manufactured according to international engineering standards and customer project specifications. Each valve undergoes dimensional inspection, hydrostatic shell testing, seat leakage testing, cryogenic performance verification where specified, torque testing, fire-safe verification where required, and final operational inspection before dispatch. Material Test Certificates (MTC), PMI reports, NDT reports, pressure test reports, and inspection documentation are available to satisfy engineering, procurement, and project compliance requirements.
Supply Across Africa
African Valve offers Forged Cryogenic Trunnion Ball Valves for LNG terminals, industrial gas facilities, cryogenic storage, air separation plants, energy projects, and processing facilities in Nigeria, Egypt, South Africa, Kenya, Ghana, and other African nations. Valves are offered in various material grades, pressure ratings, ends, seats, and actuation options that satisfy the cryogenic isolation needs of a particular project.