Pneumatic Trunnion Ball Valve Suppliers in Angola

Automated high-pressure pipelines require valves that provide dependable shut-off, low operating torque, and long service life. African Valve supplies Pneumatic Trunnion Ball Valves for projects across Angola where remote operation and reliable sealing are essential. These valves are widely used in oil & gas, petrochemical, mining, power generation, chemical processing, marine, water treatment, and steel industries.

Why Use a Pneumatic Trunnion Ball Valve?

Trunnion-mounted ball design reduces operating torque.
Suitable for high-pressure and large-diameter pipelines.
Delivers reliable shut-off performance.
Supports automated operation with pneumatic actuators.
Available with soft seats or metal seats depending on service conditions.
Suitable for frequent opening and closing cycles.
Designed for critical isolation and emergency shutdown applications.

How Does It Work?

The ball is supported by upper and lower trunnions, which keep it fixed in position. Under pressure, the seats move towards the ball to achieve tight sealing. A pneumatic actuator uses compressed air to rotate the ball through 90°, allowing fast opening and closing without manual intervention.

Features

Trunnion-mounted ball design.
Full bore and reduced bore options.
Double acting or spring return actuator.
Fire-safe construction.
Blowout-proof stem.
Anti-static device.
Double block and bleed arrangement.
Emergency sealant injection.
Cavity pressure relief system.
Low-emission graphite stem packing.
ISO 5211 mounting platform.

Materials Available

Body Materials

Carbon Steel ASTM A105
Low Temperature Carbon Steel LF2
Stainless Steel F304, F316
Duplex Stainless Steel F51
Super Duplex Stainless Steel F53, F55
Alloy Steel
Monel
Inconel
Hastelloy

Ball Materials

Stainless Steel
Duplex Stainless Steel
Monel
Inconel

Seat Materials

PTFE
RPTFE

Sealing Materials

Flexible Graphite
Graphite Gaskets

Technical Specifications

Parameter	Specification
Product Type	Pneumatic Trunnion Ball Valve
Size Range	½" to 48"
Pressure Rating	Class 150 to Class 2500
Bore Type	Full Bore / Reduced Bore
Body Construction	Forged Steel
End Connections	RF Flanged, RTJ, Butt Weld, Socket Weld
Actuator Type	Pneumatic Double Acting / Spring Return
Air Supply	3 Bar to 8 Bar
Operation	On-Off / Modulating
Design Standard	API 6D, API 608, ASME B16.34, ISO 17292
Face-to-Face	ASME B16.10
Testing Standard	API 598, API 6D, EN 12266
Fire Safety Standard	API 607 / API 6FA
Optional Features	DBB, Anti-Static, Sealant Injection

Applications

These valves are widely used in:

Oil & Gas production and transmission
Petrochemical plants
Refineries
Water and wastewater treatment facilities
Chemical processing units
Power generation plants
Mining operations
Marine systems
Steel and metal industries
Tank farms and pipeline networks

Why Choose African Valve?

Complete valve and pneumatic actuator assemblies.
API-compliant products with international standards.
Hydrostatic and seat leakage testing before dispatch.
Material traceability and inspection documentation available.
Technical support for valve selection and actuator sizing.
Reliable solutions for demanding industrial applications.

Designed for critical pipeline applications, these valves combine high mechanical strength with reliable sealing and efficient operation. Complete documentation, inspection records, and technical assistance help ensure safe and dependable performance throughout the service life.