Description
1/2"–2" 3-Way 316 Stainless Pneumatic Ball Valve
The 3-Way 316 Stainless Steel Pneumatic Ball Valve provides reliable automated flow control for diverting, selecting and mixing applications in industrial process systems.
Available from 1/2" to 2" BSP, the valve can be configured with either an L Port or T Port ball and supplied with a double acting or single acting spring return pneumatic actuator. Multiple T-port flow arrangements are available to suit different process requirements.
Manufactured from 316 stainless steel with PTFE seats and seals, the valve is suitable for pressures from 0 to 25 Bar and provides a durable, corrosion-resistant solution for water, compressed air, oils and compatible industrial process fluids.
Valve Function & Operation
This 3-way pneumatic ball valve is designed to control the direction of fluid through three connected ports.
The valve can be supplied with either an L Port or T Port configuration, allowing the assembly to be matched to the required flow arrangement.
L Port configurations are primarily used for diverting or selecting flow between two alternative process lines.
T Port configurations provide additional possibilities for diverting, selecting, distributing or mixing flow. Available T-port arrangements include TA, TB, TD and TE flow paths.
Pneumatic Actuator Options
Two pneumatic actuator configurations are available.
Double Acting – compressed air operates the actuator in both directions, providing powered movement between valve positions.
Single Acting Spring Return – compressed air operates the actuator in one direction and an internal spring mechanism provides the return movement when the air supply is removed.
Actuator supply pressure: 5 to 8 Bar
The aluminium alloy actuator provides a compact and corrosion-resistant automation package suitable for industrial environments.
Sizes & Connections
Available valve sizes:
✓ 1/2" BSP
✓ 3/4" BSP
✓ 1" BSP
✓ 1-1/4" BSP
✓ 1-1/2" BSP
✓ 2" BSP
BSP threads are standard, with NPT connections available as an option.
Pressure & Performance
Operating pressure: 0 to 25 Bar
Body strength test: 38 Bar
Pneumatic seat/seal test: 6 Bar
Hydraulic seat/seal test: 28 Bar
Maximum media viscosity: 500 cSt
The valve can be mounted in any position, allowing greater flexibility when integrating it into existing pipework, machinery and process equipment.
Construction & Materials
Valve body: 316 Stainless Steel
Valve design: Full port
Seats and seals: PTFE
Pneumatic actuator: Aluminium alloy
The combination of a 316 stainless steel valve body and PTFE sealing provides excellent corrosion resistance for a broad range of compatible industrial fluids.
Media Compatibility
Typical compatible media include:
✓ Air
✓ Water
✓ Compressed air
✓ Oils
✓ Fuels
✓ Compatible chemicals
✓ Industrial process fluids
For chemical, fuel or aggressive media applications, compatibility with 316 stainless steel and PTFE should be confirmed against the specific fluid, concentration and operating temperature.
Temperature Range
Ambient temperature: -15°C to +60°C
Media temperature: -20°C to +80°C
An optional high-temperature version up to +150°C is available for applications operating beyond the standard temperature range.
ISO 5211 & NAMUR Automation
The valve incorporates an ISO 5211 direct mounting interface, providing a robust mechanical connection between the ball valve and pneumatic actuator.
The actuator also incorporates VDI/VDE 3845 and NAMUR interfaces, simplifying the installation of compatible pneumatic control accessories.
A NAMUR solenoid valve can be mounted directly onto the actuator for electrical control from a PLC, relay, process controller or other automation system.
Limit Switch Box Option
An optional valve limit switch box can be fitted where remote confirmation of valve position is required.
This provides electrical feedback of the valve position to a PLC, control panel or process management system and is particularly useful where confirmation of valve movement is required as part of an automated sequence.
L Port & T Port Flow Control
Selecting the correct internal ball configuration is important with any three-way ball valve.
L Port → Commonly used for diverting one inlet between two outlets or selecting between alternative process lines.
T Port → Provides additional flow arrangements for mixing, diverting, distributing and selecting between connected lines.
T Port options include TA, TB, TD and TE, allowing the valve flow path to be selected according to the process requirement.
Typical Applications
✓ Process automation
✓ Water treatment systems
✓ Chemical dosing equipment
✓ Fluid transfer systems
✓ Tank selection and diversion
✓ Mixing systems
✓ Industrial process equipment
✓ Food & beverage equipment
✓ Pharmaceutical equipment
✓ OEM machinery
For food, beverage or pharmaceutical duties, suitability should be assessed against the application's specific hygiene, material and certification requirements.
Complete Pneumatic Valve Automation
The modular design allows the valve to be configured as a complete automated process valve.
Available options include:
L Port or T Port → Select the required flow arrangement
Double Acting → Air powered in both directions
Spring Return → Defined return on air loss
NAMUR Solenoid Valve → Electrical actuator control
Limit Switch Box → Valve position feedback
NPT Thread → Alternative process connection
This provides a flexible platform for applications ranging from straightforward flow diversion to fully automated industrial process control.
Ordering Information
When ordering, specify:
Valve Size: 1/2", 3/4", 1", 1-1/4", 1-1/2" or 2"
Flow Pattern: L Port or T Port
T Port Pattern: TA, TB, TD or TE where required
Actuator: Double Acting or Spring Return
Thread: BSP or NPT
Control: NAMUR solenoid valve if required
Feedback: Limit switch box if required
Temperature: Standard or +150°C version
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