Pneumatic Actuated Valve Manufacturer in India

A pneumatic actuated valve combines an industrial valve with a pneumatic actuator to provide automated opening, closing or modulating control using compressed air. Pneumatic actuation may be selected where suitable operating speed, frequent cycling or a defined fail-open/fail-close action is required. Speciality Valve specializes in manufacturing pneumatic actuated valve assemblies depending on the valve design, pressure, temperature, torque and service conditions.

Pneumatic Actuated Valve Applications and Service Areas:

Pneumatic actuated valves are used where remote operation, automated isolation or process control is required and a suitable compressed-air supply is available.

• Hydrocarbon Transfer Lines – Used for remote isolation in transfer pipelines, loading systems and terminal piping.

• Pump and Compressor Systems – Used on suitable suction, discharge or bypass lines where automated isolation or flow control is required.

• Chemical Transfer Systems – Applied in process pipelines requiring controlled operation and suitable material compatibility.

• Slurry Handling Lines – Pneumatic Knife Gate Valve configurations may be selected for compatible abrasive or solids-bearing media.

• Water Treatment Process Lines – Used in filtration, treatment and distribution systems requiring automated flow control.

Pneumatic Actuated Valve Types and Available Options:

Pneumatic actuators can be combined with different valve designs based on the required isolation, flow control and process conditions.

• Pneumatic Actuated Ball Valve: Used for quarter-turn automated isolation in liquid, gas and process applications. Configurations include floating ball, trunnion mounted, three-way, two-piece, three-piece, forged trunnion and flanged ball valve designs.

• Pneumatic Actuated Butterfly Valve: Provides compact automated isolation and flow control with wafer, lug and flanged body/connection configurations for different pipeline requirements.

• Pneumatic Actuated Gate Valve: Used for automated isolation where a straight-through flow path and low flow restriction are required in the fully open position.

• Pneumatic Actuated Knife Gate Valve: Used for automated isolation of compatible slurry, fibrous or solids-bearing media according to the selected Knife Gate Valve design.

• Pneumatic Actuated Globe Valve: Used for automated throttling and flow regulation with controlled stem movement.

Pneumatic Actuator Types and Operating Modes:

Pneumatic actuator selection depends on valve torque, operating cycle, air supply and required fail position.

• Single-Acting Pneumatic Actuator – Uses air pressure in one direction with spring return, allowing a defined spring-return position where configured.

• Double-Acting Pneumatic Actuator – Uses compressed air for both opening and closing movement.

• Rack-and-Pinion Actuator – Rotary pneumatic actuator commonly used with compatible quarter-turn valves.

• Scotch-Yoke Actuator – Rotary pneumatic actuator with a non-linear torque characteristic suited to selected high-torque quarter-turn valve applications.

• Linear Pneumatic Actuator – Provides linear output movement for compatible linear-motion valve arrangements.

Important actuator features include:

• Torque output

• Air supply pressure (commonly 4–8 bar depending on actuator design)

• Fail-open or fail-close arrangement

• Operating temperature range

• Solenoid valve

• Limit switch

• Positioner

• Manual override

Accessories depend on the actuator operating mode, control requirement and project specification. A positioner is particularly applicable to modulating configurations.

Pneumatic Actuated Valve Technical Data:

Material Selection for Process Conditions:

Material selection depends on operating medium, temperature, pressure and corrosion conditions.

Common materials include:

• Carbon Steel – Used for compatible general industrial and hydrocarbon service.

• Low Temperature Carbon Steel – Selected for low-temperature applications.

• Stainless Steel – Used where corrosion resistance is required.

• Duplex Stainless Steel – Selected for compatible chloride-bearing service where higher strength and localized-corrosion resistance are required.

• Super Duplex Stainless Steel – Selected for more severe compatible chloride-bearing or corrosive service where Duplex does not provide the required performance.

• Nickel Alloys – Selected by specific alloy grade according to process chemistry, temperature and corrosion requirements.

Pressure Rating, Connections and Standards:

Common connection options include:

• Raised Face and Ring Type Joint flanged ends

• Wafer and lug mounting arrangements

• Butt weld connections

• Threaded connections

Applicable standards may include:

• ASME B16.34 – Where applicable to the selected valve.

• API 6D – Only for relevant pipeline-valve designs.

• ISO 5211 – Applicable quarter-turn actuator mounting/interface.

• API 598 – According to applicable valve/testing requirements.

• ISO 5208 – According to applicable valve/testing requirements.

• IEC 60529 – IP classification for applicable electrical actuator accessories/enclosures.

Pneumatic Actuated Valve Testing:

Testing may include:

• Shell pressure testing

• Seat leakage testing

• Valve open/close cycling

• Actuator functional testing

• Travel and limit-position verification

• Air-supply / pneumatic function check

• Fail-position test where applicable

• Solenoid and limit-switch functional checks where provided

• Positioner calibration/response check for modulating configurations

• Material verification

Share the valve type, size, pressure rating, differential pressure, required operating time, available air-supply pressure, control mode and required fail position with Speciality Valve for pneumatic actuator sizing and valve-actuator matching.