Technical Specifications:

• Nominal Pipe Size: 30 mm (1.2 inches, DN30)
• Valve Type: 3-way L-port or T-port ball valve
• Actuator Type: Pneumatic single-acting (spring return) or double-acting (S41151 configuration)
• Operating Pressure: Up to 2.1 MPa (depending on temperature and material)
• Operating Temperature Range: -29°C to +200°C (EPDM seal); -40°C to +250°C (PTFE seal)
• Cv Value: Approximately 10 (varies by port configuration)
• Leakage Rate: ANSI/FCI 70-2 Class IV (bubble-tight shutoff)
• Air Supply Pressure: 0.14 to 0.7 MPa (20 to 100 psi)
• Action: Fail-close or fail-open (selectable via actuator configuration)

Material Composition:

• Valve Body: SUS316 stainless steel (cast or forged)
• Ball: SUS316 stainless steel with PTFE seat
• Stem: SUS316 stainless steel
• Packing: PTFE with graphite filler
• Seat: PTFE (RPTFE) or PPL (polyphenylene sulfide) depending on configuration
• Actuator Housing: Aluminum alloy (die-cast)

Structural Features:

• Flanged end connections: JIS 10K/16K/20K, ANSI 150, DIN PN16
• Direct mounting to pneumatic actuator (ISO 5211 compliant)
• Blow-out proof stem design
• Anti-static device: spring-loaded stem to body contact

Working Principle:
A 90° rotation of the ball diverts or combines flow between three ports. In L-port configuration, flow is diverted between two ports with the third blocked. In T-port configuration, flow from one port is split to two outlets or combined from two inlets. The pneumatic actuator receives a 4–20 mA or 3–15 psi signal to rotate the ball to the open or closed position. Spring return provides fail-safe operation.

Advantages & Highlights:

• Quarter-turn operation for fast response (typically < 5 seconds full stroke)
• Bubble-tight shutoff with zero leakage (Class IV)
• Compact design with direct actuator mounting
• Wide material compatibility for aggressive process fluids

Applicable Industries:

• HVAC systems (heating, ventilation, air conditioning)
• Chemical process plants
• Oil and gas pipelines
• Food and pharmaceutical processing
• Steam and hot water distribution

Installation Requirements:

• Install with actuator in vertical upward position (for standard double-acting actuators)
• Provide clean, dry air supply with a filter-regulator-lubricator (FRL) unit
• Mount positioner on actuator per ISA mounting pad (ISO 5211)
• Ensure adequate space for actuator stroke and manual override operation

Usage Precautions:

• Do not exceed the maximum allowable pressure at the given temperature (refer to pressure-temperature chart)
• Lubricate stem packing periodically if using non-lubricated PTFE packing
• Do not use the valve for throttling service — it is designed for on/off control only
• Verify actuator action (fail-close vs. fail-open) matches the safety requirement of the process