Basic Flow Principle Of Three-way Stainless Steel Flange Ball Valve

For oil and gas applications, the three-way flanged ball valve handles flow control through two port configurations: L-port for diverting flow between two outlets, and T-port for mixing two inlets or splitting one inlet to two outlets. Available in sizes 1/2" to 4" with 150LB rating, this manual valve features stainless steel floating ball design. Select L-port for diversion, T-port for mixing or splitting.

L-Port vs. T-Port: Flow Path Fundamentals

The 3 way flanged ball valve uses two ball designs to achieve different flow objectives. The L-port ball, with its L-shaped internal channel, connects one inlet to one outlet at a time, providing 90° diversion for bypass circuits and flow switching. The T-port ball, with its T-shaped channel, connects two or all three ports simultaneously, enabling mixing or splitting.

The floating ball design allows the ball to move slightly downstream against the seat, using line pressure to enhance sealing. This construction suits applications requiring tight shut-off at moderate pressures.

Technical Specifications

Application-Specific Port Selection

• The 3 way ball valve flanged ends with L-port serves diverter applications requiring positive shut-off between two flow paths.

• L-port valves are specified for filter switching, bypass circuits, and sampling systems where flow must be redirected.

• The 3 way flanged valve with T-port suits mixing and distribution duties, such as blending additives or diverting product to multiple fill lines.

• T-port configurations enable simultaneous flow to two outlets or from two inlets.

Operational Workflow

1. Rotate the handle to align the port with the desired flow path.

2. For L-port: turn the handle 90° to divert flow between any two adjacent ports.

3. For T-port: position the handle to connect two or three ports for mixing or splitting.

4. The floating ball presses against the seat, forming a bubble-tight seal when closed.

5. Manual lever provides visual position indication.

Actuation and Automation

The three-way flanged ball valve features a direct-mount ISO 5211 pad for pneumatic or electric actuator attachment. This standardisation eliminates separate brackets and coupling kits, reducing installation time and alignment issues. Options include double-acting or spring-return pneumatic actuators for fail-safe operation, and electric actuators for modulating control.

Engineering Value for Process Efficiency

• The 3-way flanged ball valve reduces piping complexity by replacing multiple two-way valves with a single component.

• Lower installation costs result from fewer fittings and welds.

• Reduced potential leak points improve system reliability.

• The floating ball design provides reliable sealing at 150LB rating.

• Compliance with industry standards ensures suitability for oil and gas applications.

Proper valve selection ensures optimal flow control. Match port type to function—L-port for diversion, T-port for mixing or splitting.

1. Select port configuration (L-port for diversion, T-port for mixing/splitting).

2. Verify size (1/2" to 4") matches pipe diameter.

3. Confirm pressure rating (150LB) meets process requirements.

4. Choose actuator type (manual, pneumatic, or electric) based on automation needs.

These measures ensure reliable flow control. Properly specified three-way flanged ball valves deliver efficient diversion, mixing, and distribution performance in oil and gas applications.

FEATURES:

• Blow-out Proof Stem
• Anti-Ataic Device for Ball-Stem-Body
• Investment Casting Body
• Pressure Balance Hole in Ball Slot
• ISO 5211 Direct Mounting P ad for Easy Automatic
• Locking Device Available

STANDARD:

• Design: ASME B16.34,API 608
• Wall Thickness: ASME B16.34,EN12516-3
• Flange End: ASME B16.5CLASS 150
• Inspection&Testing:API598, EN12266