Pneumatic Actuated Valves

Pneumatic Actuated Valves

African Valve is a trusted Pneumatic Actuated Valves Manufacturer in Sudan, offering fast-acting, air-operated valve solutions for automated flow control in critical applications. These valves are designed for high-speed cycling, making them ideal for process industries that demand quick response, high reliability, and minimal energy consumption.

Function & Working

Pneumatic actuated valves function by using compressed air to drive a piston or diaphragm, which opens or closes the valve. Depending on the control signal and actuator design (spring return or double acting), the valve can be used for on/off or modulating service, ensuring efficient flow regulation in complex piping systems.

Advantages

  • Rapid actuation with high cycling frequency

  • Fail-safe functionality in spring return models

  • Reduced energy consumption compared to electric actuators

  • Compact and robust design for industrial environments

  • Suitable for hazardous zones with explosion-proof options

Types Offered

  • Pneumatic Actuated Ball Valve

  • Pneumatic Actuated Butterfly Valve

  • Pneumatic Actuated Gate Valve

Industries Served

  • Oil and Gas

  • Power Plants

  • Chemical and Petrochemical

  • Wastewater Treatment

  • Pharmaceutical and Biotech

  • Mining and Minerals

  • Marine and Offshore

Key Components

  • Valve Body – Made from robust cast or forged materials to handle high pressure

  • Pneumatic Actuator – Converts air pressure into linear or rotary motion

  • Positioner – Regulates actuator travel based on control signals

  • Stem and Seals – Provide leak-free operation under continuous cycling

  • Limit Switch Box – Detects and signals valve position

  • Solenoid Valve – Controls air supply to actuator

  • Mounting Bracket and Coupling – Ensures precise actuator-to-valve alignment

Technical Specifications

  • Design Standards: API 6D, ASME B16.34, ISO 5211

  • Body Materials: WCB (ASTM A216), CF8M (SS316), CF8 (SS304), Ductile Iron, Alloy 20, Super Duplex, Monel, Hastelloy

  • Trim Options: SS316, Stellite, PTFE, 17-4 PH

  • Pressure Ratings: Class 150 to 2500 / PN10 to PN420

  • Size Range: DN15 to DN1200

  • End Connections:

    • Flanged (RF or RTJ)

    • Butt Weld (BW – Welded for leak-proof high-pressure systems)

    • Socket Weld (SW – Compact welded ends)

    • Threaded (NPT – For low-pressure, compact systems)

  • Actuation Options: Spring return (fail-safe) or double acting pneumatic actuators with 3–5 bar operating pressure and control via solenoid valves or positioners.

  • Special Features:

    • Explosion-proof actuator options

    • SIL-compliant for safety-critical systems

    • Fast actuation time (≤1s for small sizes)

    • Supplied by a reliable Pneumatic Actuated Valves Manufacturer in Sudan

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