Pneumatic Actuated Ball Valve

African Valve, a Pneumatic Actuated Ball Valve Supplier in Nigeria, provides pneumatic actuated ball valves that combine the quarter-turn operation of a ball valve with compressed-air actuation. These valves provide fast opening and closing and can be integrated with PLC, DCS and SCADA systems for remote operation.

Where Are Pneumatic Actuated Ball Valves Used?

Pneumatic actuated ball valves are commonly used where rapid quarter-turn operation, reliable isolation and remote control are required. Typical applications include oil and gas facilities, refineries, petrochemical plants, chemical processing units, water-treatment systems, mining operations, fuel-transfer systems and industrial process pipelines.

Accessories such as solenoid valves, limit-switch boxes, air filter regulators and positioners can be supplied according to the automation requirements.

Engineering Design & Operation

A ball valve uses a spherical closure element with a machined flow passage. When the bore is aligned with the pipeline, the valve is open. Rotating the ball approximately 90° moves the solid section across the flow passage to isolate the line.

The pneumatic actuator converts compressed-air energy into rotary movement at the valve stem. A double-acting actuator uses air for both opening and closing, while a spring-return actuator uses air in one direction and spring force in the other, allowing fail-open or fail-closed operation where required.

Depending on the application, floating or trunnion-mounted designs, full or reduced bore configurations and soft or metal seats can be selected.

Key Features

• Fast pneumatic quarter-turn operation

• Double-acting or spring-return actuators

• Remote operation and automation

• Full or reduced bore options

• Floating or trunnion-mounted designs

• Soft or metal seat configurations

• Blowout-proof stem

• Anti-static construction where specified

• Manual override where required

• Solenoid valves, limit switches and positioners

• Modulating operation where specifically configured

Technical Specifications

Materials & Components

• Body: Carbon Steel, Cast Steel, Stainless Steel or Alloy Steel

• Ball: Stainless Steel, Duplex or Alloy Steel

• Stem: Stainless Steel or Alloy Steel

• Seat: PTFE, RPTFE, PEEK or Metal

• Packing: PTFE or Graphite

• Actuator: Pneumatic double-acting or spring-return

• Accessories: Solenoid valve, limit switch, positioner and air filter regulator

Pneumatic actuated ball valves are used across oil & gas, petrochemical, chemical, water treatment, mining, power generation and industrial process systems. API 608 and ISO 17292 are relevant ball-valve standards, while API 6D applies where the valve is designed for pipeline service. Testing can be carried out to API 598, ISO 5208 or applicable project requirements.

Applications & Standards