Pneumatic Actuated Ball Valve

Pneumatic Actuated Ball Valves

Pneumatic actuated ball valves combine a quarter-turn ball valve with a compressed-air-powered actuator for remote flow isolation and automated operation. Valve materials, pressure ratings, seat configurations, actuator types, and control accessories can be selected according to the process medium, operating conditions, and system requirements.

Actuator Types & Operating Options

Single-Acting Spring-Return Actuator

Spring-Return Function: Compressed air drives one stroke, while a spring provides the return movement when air pressure is lost.
Fail Position: Fail-open or fail-closed operation depends on the actuator configuration and valve assembly.

Double-Acting Actuator

Pneumatic Operation: Compressed air drives both opening and closing strokes.
Sizing Requirements: Actuator output torque must meet the valve's operating torque requirements at the minimum available air pressure.

On/Off & Modulating Control

On/Off Service: Provides full-open and full-closed operation for automated pipeline isolation.
Modulating Service: A compatible positioner can support intermediate positioning when the valve, actuator, and process conditions are suitable for flow regulation.

Technical Specifications & Material Options

Parameter	Available Options / Selection Requirements
Valve Configuration	2-way or 3-way; one-piece, two-piece, or three-piece body, subject to availability
Nominal Size	Confirm the available DN/NPS range by model
Pressure Rating	Select according to valve design, size, and connection standard
Body Materials	Stainless steel, carbon steel, or other compatible materials where available
Ball & Stem Materials	Selected according to corrosion resistance and operating requirements
Seat & Seal Materials	PTFE, reinforced PTFE, PEEK, metal seats, or other model-specific options
End Connections	Threaded, flanged, butt-weld, or socket-weld, subject to model availability
Actuator Type	Rack-and-pinion or scotch-yoke, where available
Air Supply	Confirm the actuator's rated operating pressure and air quality requirements
Temperature Range	Verify the allowable limits for the complete valve and actuator assembly
Control Accessories	Solenoid valve, limit switch box, positioner, and air filter regulator
Applicable Standards	Confirm valve design, testing, mounting, and connection standards for the selected model

Typical Applications

Water & Wastewater Treatment

Automated isolation and flow routing in treatment and utility systems.

Chemical Processing

On/off control of compatible process fluids after evaluating chemical concentration, pressure, and temperature.

OEM Equipment & Process Skids:

Pneumatic valve assemblies for industrial machinery, packaged equipment, and automated fluid-handling systems.

Manufacturing & Inspection

Material Verification: Material certificates and traceability documents can be specified according to order requirements.

Machining & Assembly: Valve components and actuator mounting interfaces are checked against applicable drawings and specifications.

Pressure & Seat Leakage Testing: Testing is performed according to the applicable product standard and agreed inspection requirements.

Quality Documentation: Inspection reports, material certificates, and conformity documents are available subject to product configuration and order requirements.

Customization & RFQ Requirements

Provide the following information to support valve selection and quotation:

RFQ Item	Required Information
Valve Specifications	Size, body configuration, pressure rating, and end connection
Process Conditions	Medium composition, operating pressure, maximum differential pressure, and temperature range
Material Requirements	Body, ball, stem, seat, and seal materials
Actuator Selection	Single-acting or double-acting, minimum air supply pressure, and required fail position
Control Accessories	Solenoid voltage, limit switch requirements, positioner signal, and enclosure rating
Documentation & Delivery	Required certificates, inspection reports, CAD files, quantity, destination, and delivery terms

Engineering Drawing Support
Drawing Review: Submit PDF, DWG, DXF, STEP, or IGES files where available.
Configuration Confirmation: Valve dimensions, actuator interfaces, accessories, and documentation requirements should be confirmed before order placement.

Frequently Asked Questions

Q: What is a pneumatic actuated ball valve?

A: It is a ball valve operated by a compressed-air-powered actuator. The actuator rotates the ball to open or close the flow passage, enabling remote operation in automated piping systems.

Q: How do single-acting and double-acting actuators differ?

A: A single-acting actuator uses a spring for the return stroke and can be configured for a specified fail position. A double-acting actuator uses compressed air for both strokes. Selection depends on operating requirements and the available air supply.

Q: How is the actuator correctly sized?

A: Sizing considers valve operating torque, maximum differential pressure, minimum available air pressure, operating conditions, and the manufacturer's sizing method.

Q: Can pneumatic actuated ball valves regulate flow?

A: Yes, if the valve, actuator, and positioner are suitable for modulating service. Control performance depends on valve characteristics, differential pressure, and process conditions.

Q: What inspection documents can be supplied?

A: Depending on the selected model and purchase requirements, documentation may include pressure-test reports, material certificates, inspection records, and applicable conformity documents. Required standards and certificates should be confirmed during the RFQ stage.

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