Three-Way Flanged Ball Valve

The three-way flange ball valve is a 90-degree rotary ball valve with a flange connection method and a three-channel flow passage structure. It mainly includes two mainstream types:L-type (Q44F) and T-type (Q45F). By rotating the ball core 90 degrees, it realizes fluid direction switching, flow splitting, flow merging and mixing ratio control in the pipeline. It replaces multiple sets of ordinary valves to simplify pipeline layout and serves as a core direction control valve for industrial fluid pipeline systems.

L-type Three-Way Flange Ball Valve: Connects two perpendicular pipelines and closes the third one, designed for simple two-way flow and pipeline switching.

T-type Three-Way Flange Ball Valve: Enables interconnection of three ports or arbitrary two-port connection with single-port cut-off function, ideal for flow splitting, merging, mixing and multi-process line switching.

Adopting an integrated valve body structure, the Three-Way Flanged Ball Valve can be equipped with two-seat or four-seat sealing structures, and the flange connection complies with industrial standard pipelines, featuring firm installation and excellent tightness. It supports flexible driving modes including manual, worm gear, pneumatic and electric types, and can be connected to automatic control systems to realize remote regulation and control.

Main external and connection dimension JB/T79.1

Core Product Features

1. Superior Flow Performance

Full-bore structure offers low flow resistance, large throughput and minor pressure drop, suitable for viscous and particle-laden media.

2. Fast & Flexible Operation

90° quick rotation realizes rapid switching. Optional pneumatic/electric actuators support automatic and remote control.

3. Zero-leakage Sealing

High-quality PTFE/PPL seats and reliable stem packing ensure tight sealing against high pressure and corrosion.

4. Robust & Durable Structure

Integrated rigid body with carbon steel/stainless steel options provides high stability and long service life.

5. Easy Maintenance

Flange connection allows convenient disassembly and in-situ maintenance, lowering operational costs.

6. Wide Compatibility

Customizable materials fit various temperatures, pressures and media for diverse industrial working conditions.

Application Fields

Widely used in fluid pipeline systems of petroleum and chemical industry, natural gas, municipal water supply and heating, electric power energy, metallurgy, pharmaceutical, food and beverage, papermaking, HVAC and other industries:

● Process pipeline fluid direction switching, batch material switching, cold and hot medium mixing and proportioning

● Three-way switching and bypass pipeline control of heating and air conditioning systems

● Material flow splitting, merging and cleaning pipeline switching in chemical production lines

● Multi-channel distribution and maintenance pipeline switching of energy transmission pipelines

Installation and Maintenance Guidelines

● Before installation, verify the valve model, pressure grade and flow direction marking, and clean pipeline impurities to prevent hard particles from scratching the valve seat sealing surface.

● Tighten flange bolts diagonally and evenly to ensure uniform stress on the sealing surface and avoid flange leakage.

● Regularly check the sealing condition of valve stem packing and the operating state of actuators. Keep the valve half-open during long-term standby to avoid aging of the sealing surface caused by long-term pressure.

● Operation beyond the rated pressure and temperature is prohibited, and severe impact is forbidden to extend the service life of the valve.

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